Cita APA (7th ed.)

Hahn, M. E., & MacLean, M. S. (1955). Counseling psychology (2a. ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Hahn, Milton E., i Malcolm S. MacLean. Counseling Psychology. 2a. ed. Nueva York: McGraw-Hill, 1955.

Cita MLA (9th ed.)

Hahn, Milton E., i Malcolm S. MacLean. Counseling Psychology. 2a. ed. McGraw-Hill, 1955.