APA (7e ed.) Bronvermelding

(1939). Vol. 31, № 3; Industrial and Engineering Chemistry. Industrial Edition. 1939.

Chicago (17e ed.) Bronvermelding

Vol. 31, № 3; Industrial and Engineering Chemistry. Industrial Edition. 1939, 1939.

MLA (9e ed.) Bronvermelding

Vol. 31, № 3; Industrial and Engineering Chemistry. Industrial Edition. 1939, 1939.

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