Ivany, J. W. G. (1975). Today's science: A professional approach to teaching elementary school science. Science Research Associates.
Chicago-Zitierstil (17. Ausg.)Ivany, J. W. George. Today's Science: A Professional Approach to Teaching Elementary School Science. Chicago: Science Research Associates, 1975.
MLA-Zitierstil (8. Ausg.)Ivany, J. W. George. Today's Science: A Professional Approach to Teaching Elementary School Science. Science Research Associates, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.