APA aipamena

World Health Organization. (2011). Guide to ship sanitation. World Health Organization.

Chicago Style aipamena

World Health Organization. Guide to Ship Sanitation. Geneva, Switzerland: World Health Organization, 2011.

MLA aipamena

World Health Organization. Guide to Ship Sanitation. World Health Organization, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.