APA (7th ed.) Citation

Zinn, K. L. (1974). Free and Inexpensive Materials on Computing in Teaching and Learning Activities.

Chicago Style (17th ed.) Citation

Zinn, Karl L. Free and Inexpensive Materials on Computing in Teaching and Learning Activities. 1974.

MLA (9th ed.) Citation

Zinn, Karl L. Free and Inexpensive Materials on Computing in Teaching and Learning Activities. 1974.

Warning: These citations may not always be 100% accurate.