APA (7th ed.) Citation

Duffy, K. G., & Wong, F. Y. (1995). Community psychology. Allyn and Bacon.

Chicago Style (17th ed.) Citation

Duffy, Karen G., and Frank Y. Wong. Community Psychology. Boston [u.a.]: Allyn and Bacon, 1995.

MLA (9th ed.) Citation

Duffy, Karen G., and Frank Y. Wong. Community Psychology. Allyn and Bacon, 1995.