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

APA Citation Edition Citation

Harding, P. (1991). All pigs are animals, but are all animals pigs? -.

Chicago Citation Edition Citation

Harding, P. All Pigs Are Animals, but Are All Animals Pigs? -. 1991.

MLA Citation Edition Citation

Harding, P. All Pigs Are Animals, but Are All Animals Pigs? -. 1991.