Gaya APA
Widaningsih, R., Adamson, H. (2022).
The Guidebook of Learning English Grammar for Modern People (Cet.1).
Yogyakarta:
Anak Hebat Indonesia.
Gaya MLA
Widaningsih, Ruri., Adamson, Herman.
"The Guidebook of Learning English Grammar for Modern People".
Cet.1
Yogyakarta:
Anak Hebat Indonesia,
2022.
Textbook.