APA (7th ed.) Citation

Büdeler, W. (1957). The international geophysical year. UNESCO.

Chicago Style (17th ed.) Citation

Büdeler, Werner. The International Geophysical Year. Paris: UNESCO, 1957.

MLA (8th ed.) Citation

Büdeler, Werner. The International Geophysical Year. UNESCO, 1957.

Warning: These citations may not always be 100% accurate.