If an ellipsis ends the sentence, then there are three dots, each separated by a space, followed by the final punctuation (e.g. Hah . . . ? ). In some legal writing, an ellipsis is written as three asterisks, *** or * * *, to make it obvious that text has been omitted or to signal that the omitted text extends beyond the end of the paragraph. British English
The Oxford Style Guide recommends setting the ellipsis as a single character … or as a series of three (narrow) spaced dots surrounded by spaces, thus:  . . . . If there is an ellipsis at the end of an incomplete sentence, the final full stop is omitted. However, it is retained if the following ellipsis represents an omission between two complete sentences. Contrary to The Oxford Style Guide, the University of Oxford Style Guide demands an ellipsis not to be surrounded by spaces, except when it stands for a pause; then, a space has to be set after the ellipsis (but not before). An ellipsis is never preceded or followed by a full stop. In Polish
When applied in Polish syntax, the ellipsis is called wielokropek, literally multidot. The word wielokropek distinguishes the ellipsis of Polish syntax from that of mathematical notation, in which it is known as an elipsa. When an ellipsis replaces a fragment omitted from a quotation, the ellipsis is enclosed in parentheses or square brackets. An unbracketed ellipsis indicates an interruption or pause in speech.
In French typography, the ellipsis is written immediately after the preceding word, but has a space after it, for example: comme ça... pas comme ceci. If, exceptionally, it begins a sentence, there is a space before and after, for example: Lui ? ... vaut rien, je crois... . However, any omitted word, phrase or line at the end of a quoted passage would be indicated as follows: [...] (space before and after the square brackets but not inside), for example: ... à Paris, Nice, Nantes, Toulouse [...]. In German
In German, the ellipsis in general is surrounded by spaces, if it stands for one or more omitted words. On the other side there is no space between a letter or (part of) a word and an ellipsis, if it stands for one or more omitted letters, that should stick to the written letter or letters. Example for both cases, using German style: The first el...is stands for omitted letters, the second ... for an omitted word. If the ellipsis is at the end of a sentence, the final full stop is omitted.Example: I think that ... In Italian
The Accademia della Crusca suggests the use of an ellipsis ("puntini di sospensione") to indicate a pause longer than a period and, when placed between brackets, the omission of letters, words or phrases. "Tra le cose più preziose possedute da Andrea Sperelli era una coperta di seta fina, d’un colore azzurro disfatto, intorno a cui giravano i dodici segni dello Zodiaco in ricamo, con le denominazioni […] a caratteri gotici."