APA (7th ed.) Citation

Bentley, W. A., & Humphreys, W. J. (1962). Snow crystals. Dover Publications.

Chicago Style (17th ed.) Citation

Bentley, W. A., and W. J. Humphreys. Snow Crystals. New York: Dover Publications, 1962.

MLA (9th ed.) Citation

Bentley, W. A., and W. J. Humphreys. Snow Crystals. Dover Publications, 1962.