APA aipamena

Williams, C. B. (1930). The migration of butterflies. Oliver and Boyd.

Chicago Style aipamena

Williams, Carrington Bonsor. The Migration of Butterflies. Edinb.: Oliver and Boyd, 1930.

MLA aipamena

Williams, Carrington Bonsor. The Migration of Butterflies. Oliver and Boyd, 1930.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.