APA-referens (7:e uppl.)

Bernhardt, K. S. (1953). Practical psychology (2nd ed.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Bernhardt, Karl Schofield. Practical Psychology. 2nd ed. New York: McGraw-Hill, 1953.

MLA-referens (9:e uppl.)

Bernhardt, Karl Schofield. Practical Psychology. 2nd ed. McGraw-Hill, 1953.