APA (7th ed.) Citation

Hammerman, D. R., & Hammerman, W. M. (1973). Teaching in the outdoors (2nd ed.). Burgess Pub.

Chicago Style (17th ed.) Citation

Hammerman, Donald R., and William M. Hammerman. Teaching in the Outdoors. 2nd ed. Minneapolis: Burgess Pub, 1973.

MLA (9th ed.) Citation

Hammerman, Donald R., and William M. Hammerman. Teaching in the Outdoors. 2nd ed. Burgess Pub, 1973.