APA (7e ed.) Bronvermelding

Sullivan, W. (1961). Assault on the unknown: The International Geophysical Year. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Sullivan, Walter. Assault on the Unknown: The International Geophysical Year. New York: McGraw-Hill, 1961.

MLA (9e ed.) Bronvermelding

Sullivan, Walter. Assault on the Unknown: The International Geophysical Year. McGraw-Hill, 1961.

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