APA (7e ed.) Bronvermelding

Não informado. (1968). Materials today. American Society for Metals.

Chicago (17e ed.) Bronvermelding

Não informado. Materials Today. Cleveland, Ohio: American Society for Metals, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Materials Today. American Society for Metals, 1968.

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