APA-referens (7:e uppl.)

Curtis, G. T. (1887). Creation or evolution?: A philosophical inquiry. Appleton.

Chicago-referens (17:e uppl.)

Curtis, George Ticknor. Creation or Evolution?: A Philosophical Inquiry. New York: Appleton, 1887.

MLA-referens (8:e uppl.)

Curtis, George Ticknor. Creation or Evolution?: A Philosophical Inquiry. Appleton, 1887.