Gaya APA

JR., G, T, M., SPOOLMAN, S, E. (2007). E-BOOK: LIVING IN THE ENVIRONMENT: CONCEPTS, CONNECTIONS, AND SOLUTIONS (Sixteenth Edition) (16). USA: BrooksCole, Cengage Learning.

Gaya MLA

JR., G., TYLER, MILLER,., SPOOLMAN, SCOTT, E.. "E-BOOK: LIVING IN THE ENVIRONMENT: CONCEPTS, CONNECTIONS, AND SOLUTIONS (Sixteenth Edition)". 16 USA: BrooksCole, Cengage Learning, 2007. Text.