Archived from the original on 20 November 2015. ↑ "ADBA American Pit Bull Terrier Puppy Socialization". adbadog.com. 8 February 2018. Archived from the original on 30 July 2017. ↑ Ott, Stefanie A.; Schalke, Esther; von Gaertner, Amelie M.; Hackbarth, Hansjoachim (May - June 2008).