APA (7th ed.) Citation

Sidgwick, J. B., & Green, W. K. (1950). The heavens above: A rationale of astronomy ([1st American ed.].). Oxford University Press.

Chicago Style (17th ed.) Citation

Sidgwick, J. B., and Warren K. Green. The Heavens Above: A Rationale of Astronomy. [1st American ed.]. New York: Oxford University Press, 1950.

MLA (9th ed.) Citation

Sidgwick, J. B., and Warren K. Green. The Heavens Above: A Rationale of Astronomy. [1st American ed.]. Oxford University Press, 1950.