Gaya APA

Cameron, S. (2018). Perfecting Your English Pronunciation: The most effective method to reduce your accent (Edisi Kedua). United States of America: mc Graw Hill Education.

Gaya MLA

Cameron, Susan. "Perfecting Your English Pronunciation: The most effective method to reduce your accent". Edisi Kedua United States of America: mc Graw Hill Education, 2018. Text.