Cita APA (7a ed.)

Gibson, R. L., & Mitchell, M. (1990). Introduction to counseling and guidance (3rd ed.). Macmillan.

Cita Chicago Style (17a ed.)

Gibson, Robert Lewis, y Marianne Mitchell. Introduction to Counseling and Guidance. 3rd ed. New York: Macmillan, 1990.

Cita MLA (9a ed.)

Gibson, Robert Lewis, y Marianne Mitchell. Introduction to Counseling and Guidance. 3rd ed. Macmillan, 1990.