Cita APA (7a ed.)

Valois, P. (1997). Tankers: An introduction to the transport of oil by sea. Witherby.

Cita Chicago Style (17a ed.)

Valois, Philippe. Tankers: An Introduction to the Transport of Oil by Sea. London: Witherby, 1997.

Cita MLA (9a ed.)

Valois, Philippe. Tankers: An Introduction to the Transport of Oil by Sea. Witherby, 1997.