Gaya APA

Panca, P., Diyan, Y. (2010). Improve your TOEIC vocabulary in second (Cet.1). Jogjakarta: .

Gaya MLA

Prastowo, Panca., Yulianto, Diyan. "Improve your TOEIC vocabulary in second". Cet.1 Jogjakarta: , 2010. Textbook.