APA (7e ed.) Bronvermelding

Não informado. (2004). Refining engineer. Petroleum Engineer Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. Refining Engineer. Dallas, Tex: Petroleum Engineer Publishing, 2004.

MLA (8e ed.) Bronvermelding

Não informado. Refining Engineer. Petroleum Engineer Publishing, 2004.

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