Cita APA

Gibson, R. L., Gibson, R. L., & Mitchell, M. (1986). Introduction to counseling and guidance (2nd ed.). Macmillan.

Citación estilo Chicago

Gibson, Robert Lewis, Robert L. Gibson, and Marianne Mitchell. Introduction to Counseling and Guidance. 2nd ed. New York: Macmillan, 1986.

Cita MLA

Gibson, Robert Lewis, et al. Introduction to Counseling and Guidance. 2nd ed. Macmillan, 1986.