Gaya APA

Groth, C. et al (2022). Essay writing english for academic purposes : with exercises and answer key 3rd edition (Cet. 1 (2022)). Yogyakarta: ANDI.

Gaya MLA

Groth, Cheryl. et al. "Essay writing english for academic purposes : with exercises and answer key 3rd edition". Cet. 1 (2022) Yogyakarta: ANDI, 2022. Text.