APA aipamena

Encyclopedia, G. U. (1970). GROLIER UNIVERSAL ENCYCLOPEDIA VOLUME 20. Grolier Incorporated.

Chicago Style aipamena

Encyclopedia, Glorier Universal. GROLIER UNIVERSAL ENCYCLOPEDIA VOLUME 20. Grolier Incorporated, 1970.

MLA aipamena

Encyclopedia, Glorier Universal. GROLIER UNIVERSAL ENCYCLOPEDIA VOLUME 20. Grolier Incorporated, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.