Gaya APA

Suyanto, K, K., Sri, I, R. (2006). Lets communicate in English 2: a speaking course for intermediate level . Jakarta: Jakarta: Elek Media Komputindo, 2006.

Gaya MLA

Suyanto, Kasihani, K.E., Sri, I., Rachmajanti,. "Lets communicate in English 2: a speaking course for intermediate level". Jakarta: Jakarta: Elek Media Komputindo, 2006, 2006. .