APA aipamena

Hankins. Ice Axes for Frozen Seas. Baylor University Press.

Chicago Style aipamena

Hankins. Ice Axes for Frozen Seas. Baylor University Press.

MLA aipamena

Hankins. Ice Axes for Frozen Seas. Baylor University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.