APA (7th ed.) Citation

Ley, W. (1971). The poles. Time Life International.

Chicago Style (17th ed.) Citation

Ley, Willy. The Poles. Time Life International, 1971.

MLA (8th ed.) Citation

Ley, Willy. The Poles. Time Life International, 1971.

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