Kowitz, G. T., & Kowitz, N. G. (1959). Guidance in the elementary classroom. McGraw-Hill Book.
Cita Chicago (17th ed.)Kowitz, Gerald T., i Norma Giess Kowitz. Guidance in the Elementary Classroom. Nueva York: McGraw-Hill Book, 1959.
Cita MLA (9th ed.)Kowitz, Gerald T., i Norma Giess Kowitz. Guidance in the Elementary Classroom. McGraw-Hill Book, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.