APA (7th ed.) Citation

Treanor, W. W., & Bijlefeld, M. (1989). Kids & guns (2. ed.). American Youth Work Center [u.a.].

Chicago Style (17th ed.) Citation

Treanor, William W., and Marjolijn Bijlefeld. Kids & Guns. 2. ed. Washington, DC: American Youth Work Center [u.a.], 1989.

MLA (9th ed.) Citation

Treanor, William W., and Marjolijn Bijlefeld. Kids & Guns. 2. ed. American Youth Work Center [u.a.], 1989.