Παραπομπή APA

Mark, R. (1996). Research made simple: A Handbook for social workers. Sage publication.

Παραπομπή Chicago Style

Mark, Raymond. Research Made Simple: A Handbook for Social Workers. California: Sage publication, 1996.

Παραπομπή MLA

Mark, Raymond. Research Made Simple: A Handbook for Social Workers. Sage publication, 1996.