Kelner, B. G. (1958). How to teach in the elementary school. McGraw-Hill.
Dyfyniad Arddull ChicagoKelner, Bernard G. How to Teach in the Elementary School. New York: McGraw-Hill, 1958.
Dyfyniad MLAKelner, Bernard G. How to Teach in the Elementary School. McGraw-Hill, 1958.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.