APA-referens (7:e uppl.)

Graaff, K. M. (1994). A photographic atlas for the biology laboratory (2nd.ed.). Morton.

Chicago-referens (17:e uppl.)

Graaff, Kent M. A Photographic Atlas for the Biology Laboratory. 2nd.ed. Colorado: Morton, 1994.

MLA-referens (9:e uppl.)

Graaff, Kent M. A Photographic Atlas for the Biology Laboratory. 2nd.ed. Morton, 1994.