APA (7th ed.) Citation

Dreikurs, R., Cassel, P., & Kehoe, D. (1974). Discipline without tears (2d ed., featuring the Discipline without tears workbook.). Hawthorn Books.

Chicago Style (17th ed.) Citation

Dreikurs, Rudolf, Pearl Cassel, and David Kehoe. Discipline Without Tears. 2d ed., featuring the Discipline without tears workbook. New York: Hawthorn Books, 1974.

MLA (9th ed.) Citation

Dreikurs, Rudolf, et al. Discipline Without Tears. 2d ed., featuring the Discipline without tears workbook. Hawthorn Books, 1974.