APA (7th ed.) Citation

Charters, W. W., Betz, A., & Cowan, E. M. (1930). Essential language habits. Silver, Burdett and Company.

Chicago Style (17th ed.) Citation

Charters, W. W., Annette Betz, and Esther Marshall Cowan. Essential Language Habits. New York, Chicago [etc.]: Silver, Burdett and Company, 1930.

MLA (8th ed.) Citation

Charters, W. W., et al. Essential Language Habits. Silver, Burdett and Company, 1930.