Gaya APA

Orybund, K, A., Orybooks, . (2014). Bank soal dan strategi toefl : soal-soal standar ETS . Solo: Genta Smart Publiher.

Gaya MLA

Orybund, Kusuma, A.,., Orybooks, . "Bank soal dan strategi toefl : soal-soal standar ETS". Solo: Genta Smart Publiher, 2014. Text.