APA-referens (7:e uppl.)

Hickok, L. P. (1870). Rational psychology: Or, The subjective idea and the objective law of all intelligence (A new and revised ed.). Ivison, Blakeman, Taylor & Co. ; S. C. Griggs.

Chicago-referens (17:e uppl.)

Hickok, Laurens P. Rational Psychology: Or, The Subjective Idea and the Objective Law of All Intelligence. A new and revised ed. New York ; Chicago: Ivison, Blakeman, Taylor & Co. ; S. C. Griggs, 1870.

MLA-referens (8:e uppl.)

Hickok, Laurens P. Rational Psychology: Or, The Subjective Idea and the Objective Law of All Intelligence. A new and revised ed. Ivison, Blakeman, Taylor & Co. ; S. C. Griggs, 1870.