APA (7th ed.) Zitazioa
WRIGHT, J. (1989). SURVEY RESEARCH AND SOCIAL POLICY.
Chicago Style (17th ed.) Zitazioa
WRIGHT, J.D. SURVEY RESEARCH AND SOCIAL POLICY. 1989.
MLA (9th ed.) Zitazioa
WRIGHT, J.D. SURVEY RESEARCH AND SOCIAL POLICY. 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.