APA-referens (7:e uppl.)

Hempel, C. G. (1966). Philospohy of natural science. Prentice-Hall.

Chicago-referens (17:e uppl.)

Hempel, Carl Gustav. Philospohy of Natural Science. Englewood Cliffs, N. J: Prentice-Hall, 1966.

MLA-referens (9:e uppl.)

Hempel, Carl Gustav. Philospohy of Natural Science. Prentice-Hall, 1966.