APA-referens (7:e uppl.)

Hull, D. L. (1974). Philosophy of biological science. Prentice-Hall.

Chicago-referens (17:e uppl.)

Hull, David L. Philosophy of Biological Science. Englewood Cliffs, N.J: Prentice-Hall, 1974.

MLA-referens (9:e uppl.)

Hull, David L. Philosophy of Biological Science. Prentice-Hall, 1974.