APA Style
Sugeng, B. (2017).
Contextual english 2 for Grade XI of Senior High Schools Regular Program .
Solo:
PT Tiga Serangkai.
MLA Style
Sugeng, Bambang.
"Contextual english 2 for Grade XI of Senior High Schools Regular Program".
Solo:
PT Tiga Serangkai,
2017.
Buku SMA Athalia.