APA (7th ed.) Zitazioa

Engelkes, J. R. (1982). Introduction to counselling. Houghton Mifflin.

Chicago Style (17th ed.) Zitazioa

Engelkes, James R. Introduction to Counselling. Boston: Houghton Mifflin, 1982.

MLA (9th ed.) Zitazioa

Engelkes, James R. Introduction to Counselling. Houghton Mifflin, 1982.