APA-referens (7:e uppl.)

Gregory, W. H., & Goldman, E. H. (1971). Teachers manual to accompany Biological science, revised edition. Ginn and Co..

Chicago-referens (17:e uppl.)

Gregory, William H., och Edward H. Goldman. Teachers Manual to Accompany Biological Science, Revised Edition. [Lexington, Mass.]: Ginn and Co., 1971.

MLA-referens (8:e uppl.)

Gregory, William H., och Edward H. Goldman. Teachers Manual to Accompany Biological Science, Revised Edition. Ginn and Co., 1971.