APA (7th ed.) Zitazioa

(1991). Bulktrans 91: Conference proceedings. Cargo Systems International.

Chicago Style (17th ed.) Zitazioa

Bulktrans 91: Conference Proceedings. Surrey: Cargo Systems International, 1991.

MLA (9th ed.) Zitazioa

Bulktrans 91: Conference Proceedings. Cargo Systems International, 1991.