APA (7th ed.) Citation

Williamson, B. L., Platt, J., & Perrin, J. (1972). Citizen's handbook on environmental legislation. [publisher not identified].

Chicago Style (17th ed.) Citation

Williamson, Bill L., John Platt, and John Perrin. Citizen's Handbook on Environmental Legislation. [Salem, Or.]: [publisher not identified], 1972.

MLA (9th ed.) Citation

Williamson, Bill L., et al. Citizen's Handbook on Environmental Legislation. [publisher not identified], 1972.