Gaya APA

tickner, J, A. (2003). Precaution, environmental science, and preventive publuic policy (cet.1). Washington, D.c: islan press.

Gaya MLA

tickner, Joel, A.. "Precaution, environmental science, and preventive publuic policy". cet.1 Washington, D.c: islan press, 2003. Text.