Gaya APA

Priyatno, A, V, &, D, W., Grace, M, S, &, E. (2007). Look A Head 3, an English Course For Senior High School Students Year XII . Jakarta: Erlangga.

Gaya MLA

Priyatno, Anna, Valentina, &, Dwi, Wahyu., Grace, M., Sudarwati, &, Eudia. "Look A Head 3, an English Course For Senior High School Students Year XII". Jakarta: Erlangga, 2007. Text.