APA (7th ed.) Citation

Ladd, G. T. (1894). Primer of psychology. Scribner.

Chicago Style (17th ed.) Citation

Ladd, George Trumbull. Primer of Psychology. New York: Scribner, 1894.

MLA (9th ed.) Citation

Ladd, George Trumbull. Primer of Psychology. Scribner, 1894.

Warning: These citations may not always be 100% accurate.