Gaya APA

Nugraha, F, D, F, M, N, D, M, M. (2007). Success in academic English : English for general academic purposes . : Graha Ilmu.

Gaya MLA

Nugraha, Flora, Debora, Floris,, Maria, Natalia, D., Maer,, Meedy. "Success in academic English : English for general academic purposes". : Graha Ilmu, 2007. Text.