Gaya APA

Kubasek, N, K., Silverman, G, S. (2000). Environmental law (3rd ed). Upper Saddle River,NJ: Prentice Hall.

Gaya MLA

Kubasek, Nancy, K.., Silverman, Gary, S.. "Environmental law". 3rd ed Upper Saddle River,NJ: Prentice Hall, 2000. Text.