Gaya APA

Lombardi, M, O., Harf, J, E. (2009). Taking sides: clashing views on global issues. Ed. 5 (Ed. ke-5). : McGraw-Hill.

Gaya MLA

Lombardi, Mark, Owen., Harf, James, E.. "Taking sides: clashing views on global issues. Ed. 5". Ed. ke-5 : McGraw-Hill, 2009. Textbook.