Cita APA (7a ed.)

Downing, L. N. (1967). Guidance and counseling services: An introduction. McGraw-Hill.

Cita Chicago Style (17a ed.)

Downing, Lester N. Guidance and Counseling Services: An Introduction. New York: McGraw-Hill, 1967.

Cita MLA (8a ed.)

Downing, Lester N. Guidance and Counseling Services: An Introduction. McGraw-Hill, 1967.