APA (7th ed.) Citation

Dreikurs, R., & Grey, L. (1968). A new approach to discipline, logical consequences. Hawthorn books.

Chicago Style (17th ed.) Citation

Dreikurs, Rudolf, and Loren Grey. A New Approach to Discipline, Logical Consequences. New York, N.Y.: Hawthorn books, 1968.

MLA (9th ed.) Citation

Dreikurs, Rudolf, and Loren Grey. A New Approach to Discipline, Logical Consequences. Hawthorn books, 1968.