Gaya APA

Setiayadi, A, B. et al (2018). Teaching language skills: preparing materials and selecting techniques (Ed. 1). Yogyakarta: Graha Ilmu.

Gaya MLA

Setiayadi, Ag., Bambang. et al. "Teaching language skills: preparing materials and selecting techniques". Ed. 1 Yogyakarta: Graha Ilmu, 2018. Art Original.