APA (7th ed.) Citation

Irwin, K. G. (1966). The circle of days: Measurement of time. Bantam Books.

Chicago Style (17th ed.) Citation

Irwin, Keit Gordon. The Circle of Days: Measurement of Time. Bantam Books, 1966.

MLA (8th ed.) Citation

Irwin, Keit Gordon. The Circle of Days: Measurement of Time. Bantam Books, 1966.

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