Cita APA (7a ed.)

. (2000). Tanker and bulk carrier. Spearhead Publications.

Cita Chicago Style (17a ed.)

Tanker and Bulk Carrier. Kingston Upon Thames, Inglaterra: Spearhead Publications, 2000.

Cita MLA (8a ed.)

Tanker and Bulk Carrier. Spearhead Publications, 2000.

Precaución: Estas citas no son 100% exactas.