APA aipamena

Littmann, E. Publications of the Princeton Expedition to Abyssinia. Leyden.

Chicago Style aipamena

Littmann, Enno. Publications of the Princeton Expedition to Abyssinia. Leyden.

MLA aipamena

Littmann, Enno. Publications of the Princeton Expedition to Abyssinia. Leyden.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.