Gaya APA

Easton, T, A. (2006). Taking Sides : clashing views on controversial issues in environmental issues.-- (Ed.11th.--). America: McGraw-Hill.

Gaya MLA

Easton, Thomas, A.. "Taking Sides : clashing views on controversial issues in environmental issues.--". Ed.11th.-- America: McGraw-Hill, 2006. Buku.