Gaya APA

Yufrizal,, H., Bena, I, V, K. (). An introduction to second language acquisition : a text book for ESL learners and English teachers (Second edition.). Depok: Rajawali Pers.

Gaya MLA

Yufrizal,, Hery., Bena, Indi, Vidyafi, Kausart. "An introduction to second language acquisition : a text book for ESL learners and English teachers". Second edition. Depok: Rajawali Pers, . Text.