Gaya APA

Widianto, E., Kharuddin, . (2021). Linguistics basic theory and roles in english language teaching second edition (cet.1). Yogyakarta: .

Gaya MLA

Widianto, Eko., Kharuddin, . "Linguistics basic theory and roles in english language teaching second edition". cet.1 Yogyakarta: , 2021. Text.