Gaya APA

Betsisi, A., Mamas, L. (2016). Succeed in IELTS : Self-practice, authentic test format, practical usage . Jakarta: Erlangga.

Gaya MLA

Betsisi, Andrew., Mamas, Lawrence. "Succeed in IELTS : Self-practice, authentic test format, practical usage". Jakarta: Erlangga, 2016. Buku Tercetak.