Writing: A College Handbook - End Marks (Ch. 31) About this
resource ||5.0 (1 votes) ||Nov 24, 2008| [FROM THE TEXT] Use a
period to mark the end of a declarative sentence, a mild
command, or an indirect question: “The days are growing shorter,
and the nights are becoming cool.” When typing on a computer,
skip one space after the period before beginning the next
sentence. (On a typewriter, skip two spaces.) Use a period to
mark the end of some abbreviations: “Dr. Boyle”. (NOTE: MLA
recommends not using periods in abbreviations that include
capital letters, such as PhD and BC.) Generally, you don’t need
periods with acronyms (words formed from the initials of a
multiword title), with capital-letter abbreviations of technical
terms, or with abbreviated names of states, agencies, and
organizations: “IBM”. But you do need periods with abbreviations
standing for the names of political entities: “U.S.A.” For
guidance, see your dictionary. Use a period to mark letters or
numerals used in vertical lists. If you give