Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Foster, B. (1991). George Gottlob Hackman (February 10, 1901 - March 21, 1991).

Chicago Citation Edition Citation

Foster, B.R. George Gottlob Hackman (February 10, 1901 - March 21, 1991). 1991.

MLA Citation Edition Citation

Foster, B.R. George Gottlob Hackman (February 10, 1901 - March 21, 1991). 1991.