APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

Bernhardt, Karl Schoenfield. Practical Psychology. New York: McGraw-Hill, 1953.

MLA (9e ed.) Bronvermelding

Bernhardt, Karl Schoenfield. Practical Psychology. McGraw-Hill, 1953.