Gaya APA

Kurniawan, L., Artiningsih, S, N. (2011). English Today 2 SMA Grade XI . Bogor: Quadra.

Gaya MLA

Kurniawan, Lanny., Artiningsih, Siyi, Nuryuni. "English Today 2 SMA Grade XI". Bogor: Quadra, 2011. Text.