APA aipamena

CAMPBELL, B. Humankind Emerging/ Bernard G.cambell. s.n.

Chicago Style aipamena

CAMPBELL, Bernard. Humankind Emerging/ Bernard G.cambell. s.n.

MLA aipamena

CAMPBELL, Bernard. Humankind Emerging/ Bernard G.cambell. s.n.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.