APA (7e ed.) Bronvermelding

Ivany, J. W. G. (1975). Today's science: A professional approach to teaching elementary school science. Science Research Associates.

Chicago (17e ed.) Bronvermelding

Ivany, J. W. George. Today's Science: A Professional Approach to Teaching Elementary School Science. Chicago: Science Research Associates, 1975.

MLA (8e ed.) Bronvermelding

Ivany, J. W. George. Today's Science: A Professional Approach to Teaching Elementary School Science. Science Research Associates, 1975.