APA (7e ed.) Bronvermelding

Não informado. (1966). World ports. American Association of Port Authorities.

Chicago (17e ed.) Bronvermelding

Não informado. World Ports. Washington: American Association of Port Authorities, 1966.

MLA (8e ed.) Bronvermelding

Não informado. World Ports. American Association of Port Authorities, 1966.

Let op: Deze citaties zijn niet altijd 100% accuraat.