APA Style

Widya, M, J, S. (2007). eos english on sky 3 for junior high school students year IX (1). Jakarta: Penerbit Erlangga.

MLA Style

Widya, Mukarto,Sujatmiko,Murwani, Josephine, Sri,Kiswara. "eos english on sky 3 for junior high school students year IX". 1 Jakarta: Penerbit Erlangga, 2007. Text.