Citazione APA

Gibson, R. L. (2005). Introduction to counseling and guidance (6th ed.). Pearson Education.

Stile di citazione Chicago

Gibson, Robert L. Introduction to Counseling and Guidance. 6th ed. Delhi: Pearson Education, 2005.

Citazione MLA

Gibson, Robert L. Introduction to Counseling and Guidance. 6th ed. Pearson Education, 2005.