Gaya APA

dkk, M., Valentina, D, W, P, D, A. (2008). EOS English On Sky 2 For Junior High School Students Year VIII . Jakarta: Erlangga.

Gaya MLA

dkk, Mukarto., Valentina, Dwi, Wahyu, Priyanto, Dan, Anna. "EOS English On Sky 2 For Junior High School Students Year VIII". Jakarta: Erlangga, 2008. Book.