Cita APA (7th ed.)

Chapman, S. (1959). IGY: year of discovery: The story of the International Geophysical Year. University of Michigan Press.

Cita Chicago (17th ed.)

Chapman, Sydney. IGY: Year of Discovery: The Story of the International Geophysical Year. Ann Arbor, Mich.: University of Michigan Press, 1959.

Cita MLA (8th ed.)

Chapman, Sydney. IGY: Year of Discovery: The Story of the International Geophysical Year. University of Michigan Press, 1959.