APA Citation

Purwaningsih, & Yenni. (2017). Buku pintar IELTS (Cet. 1.). Yogyakarta: B-first.

Chicago Style Citation

Purwaningsih, and Yenni. Buku Pintar IELTS. Cet. 1. Yogyakarta: B-first, 2017.

MLA Citation

Purwaningsih, and Yenni. Buku Pintar IELTS. Cet. 1. Yogyakarta: B-first, 2017.

Warning: These citations may not always be 100% accurate.