Kelner, B. G. (1958). How to teach in the elementary school. McGraw-Hill.
Cita Chicago (17th ed.)Kelner, Bernard G. How to Teach in the Elementary School. New York: McGraw-Hill, 1958.
Cita MLA (8th ed.)Kelner, Bernard G. How to Teach in the Elementary School. McGraw-Hill, 1958.
Atenció: Aquestes cites poden no estar 100% correctes.