Primary methods
Hailmann W. N.Kniha
Citace v seznamu literatury:
HAILMANN, W. N. Primary methods: a complete and methodical presentation of the use of kindergarten material in the work of the primary school : unfolding a systematic course of manual training in connection with arithmetic, geometry, drawing, and other school-studies. New York: A. S. Barnes & Company, [1887]. ISBN 9781331299455.