APA Style

Smith, Bradley F., Enger, Eldon D.. (1992). ENVIRONMENTAL SCIENCE: A Study of Interrelationships, Fourth Edition (4th). Kerper Boulevard, Dubuque, IA: Wm. C. Brown Publishers.

Chicago Style

Smith, Bradley F., Enger, Eldon D.. ENVIRONMENTAL SCIENCE: A Study of Interrelationships, Fourth Edition. 4th Kerper Boulevard, Dubuque, IA: Wm. C. Brown Publishers, 1992. Text.

MLA Style

Smith, Bradley F., Enger, Eldon D.. ENVIRONMENTAL SCIENCE: A Study of Interrelationships, Fourth Edition. 4th Kerper Boulevard, Dubuque, IA: Wm. C. Brown Publishers, 1992. Text.

Turabian Style

Smith, Bradley F., Enger, Eldon D.. ENVIRONMENTAL SCIENCE: A Study of Interrelationships, Fourth Edition. 4th Kerper Boulevard, Dubuque, IA: Wm. C. Brown Publishers, 1992. Print.