APA (7e ed.) Bronvermelding

Não informado. (1953). Geophysical digest. Central Board of Geophysics.

Chicago (17e ed.) Bronvermelding

Não informado. Geophysical Digest. Calcutta, India: Central Board of Geophysics, 1953.

MLA (8e ed.) Bronvermelding

Não informado. Geophysical Digest. Central Board of Geophysics, 1953.

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