Franklin

MLA

Schain, Robert L, and Murray Polner. Where to Get and How to Use Free and Inexpensive Teaching Aids. .

APA

Schain, R. L, & Polner, M. Where to get and how to use free and inexpensive teaching aids. .

Chicago

Schain, Robert L., and Murray Polner. Where to Get and How to Use Free and Inexpensive Teaching Aids.