APA (7th ed.) Citation

Dreikurs, R., & Soltz, V. (1972). Happy children: A challenge to parents. Collins.

Chicago Style (17th ed.) Citation

Dreikurs, Rudolf, and Vicki Soltz. Happy Children: A Challenge to Parents. Glasgow [Strathclyde]: Collins, 1972.

MLA (8th ed.) Citation

Dreikurs, Rudolf, and Vicki Soltz. Happy Children: A Challenge to Parents. Collins, 1972.