APA (7th ed.) Citation

Trzyna, T. C., & Osberg, S. R. (1975). Environmental protection directory: A comprehensive guide to environmental organizations in the United States and Canada (2nd ed.). Published for the Center for California Public Affairs by Marquis Academic Media.

Chicago Style (17th ed.) Citation

Trzyna, Thaddeus C., and Sally R. Osberg. Environmental Protection Directory: A Comprehensive Guide to Environmental Organizations in the United States and Canada. 2nd ed. Chicago, Ill.: Published for the Center for California Public Affairs by Marquis Academic Media, 1975.

MLA (9th ed.) Citation

Trzyna, Thaddeus C., and Sally R. Osberg. Environmental Protection Directory: A Comprehensive Guide to Environmental Organizations in the United States and Canada. 2nd ed. Published for the Center for California Public Affairs by Marquis Academic Media, 1975.