Gaya APA

RENSHAW, J., NICHOLS, W, O. (2007). BOOST SPEAKING 2 TEACHER' S EDITION (-). Hongkong: PEARSON LONGMAN.

Gaya MLA

RENSHAW, JASON., NICHOLS, WADE, O. "BOOST SPEAKING 2 TEACHER' S EDITION". - Hongkong: PEARSON LONGMAN, 2007. Text.