Gaya APA
Sugeng, B. (2019).
CONTEKTUAL ENGLISH ( Enrich with Character Building Education ), FOR GRADE XI .
Solo:
PT Tiga Serangkai pustaka mandiri.
Gaya MLA
Sugeng, Bambang.
"CONTEKTUAL ENGLISH ( Enrich with Character Building Education ), FOR GRADE XI".
Solo:
PT Tiga Serangkai pustaka mandiri,
2019.
.