Gaya APA

sumiratingratri, E, F, D, R. (2009). english cool (1). jl caman raya no45 jati bening: PT Cahaya Pustaka Raga.

Gaya MLA

sumiratingratri, Erna, Fitrini, Dan, Ratih. "english cool". 1 jl caman raya no45 jati bening: PT Cahaya Pustaka Raga, 2009. Text.