APA (7th ed.) Citation

Dreikurs, R. (1972). The challenge of child training: A parents guide. Hawthorn Books.

Chicago Style (17th ed.) Citation

Dreikurs, Rudolf. The Challenge of Child Training: A Parents Guide. New York: Hawthorn Books, 1972.

MLA (9th ed.) Citation

Dreikurs, Rudolf. The Challenge of Child Training: A Parents Guide. Hawthorn Books, 1972.