APA (7th ed.) Zitazioa

Katz issue, J. (1973). Services for Students. Jossey- Bass.

Chicago Style (17th ed.) Zitazioa

Katz issue, Joseph. Services for Students. Sanfrancisco: Jossey- Bass, 1973.

MLA (9th ed.) Zitazioa

Katz issue, Joseph. Services for Students. Jossey- Bass, 1973.