APA (7. basım) Alıntı

Johnson, P. H. (1968). The survival of the fittest. Macmillan.

Chicago Style (17. basım) Atıf

Johnson, Pamela Hansford. The Survival of the Fittest. London, Melbourne [etc.]: Macmillan, 1968.

MLA (8th ed.) Atıf

Johnson, Pamela Hansford. The Survival of the Fittest. Macmillan, 1968.