APA (7e ed.) Bronvermelding

Não informado. (2020). SPE Index. Society of Petroleum Engineers.

Chicago (17e ed.) Bronvermelding

Não informado. SPE Index. Richardson, Tex: Society of Petroleum Engineers, 2020.

MLA (8e ed.) Bronvermelding

Não informado. SPE Index. Society of Petroleum Engineers, 2020.

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