Gaya APA

S.Pd, R, A, P., S.S, E, H. (2008). Let's Understand English . Surakarta: PT. Era Pustaka Utama.

Gaya MLA

S.Pd, Reni, Agustin, P,., S.S, Eni, Hestuti,. "Let's Understand English". Surakarta: PT. Era Pustaka Utama, 2008. Text.