Parry, J. H. (1981). Romance of the sea. National Geographic Society.
Chicago Style aipamenaParry, J. H. Romance of the Sea. Washington, D.C: National Geographic Society, 1981.
MLA aipamenaParry, J. H. Romance of the Sea. National Geographic Society, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.