APA (7th ed.) Citation

Skilling, W. (1947). Astronomy. Henry Holt.

Chicago Style (17th ed.) Citation

Skilling, W.T. Astronomy. New York: Henry Holt, 1947.

MLA (9th ed.) Citation

Skilling, W.T. Astronomy. Henry Holt, 1947.

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