Spitzer, H. F. (1967). Teaching elementary school mathematics. Bostan, Mass.: Houghton Mifflin.
Chicago Style citaatSpitzer, Herbert F. Teaching Elementary School Mathematics. Bostan, Mass.: Houghton Mifflin, 1967.
MLA citatieSpitzer, Herbert F. Teaching Elementary School Mathematics. Bostan, Mass.: Houghton Mifflin, 1967.
Let op: Deze citaties zijn niet altijd 100% accuraat.