Gaya APA
Soeprapto, F., Darwis, M. (2005).
Linked to the World XII English for Senior High School Social Program .
Jakarta:
Yudhistira.
Gaya MLA
Soeprapto, F.A.., Darwis, Mariana.
"Linked to the World XII English for Senior High School Social Program".
Jakarta:
Yudhistira,
2005.
Textbook.