Gaya APA
Soeprapto, F. et al (2007).
Linked to The World 2 : English for Senior High School Grade XI (Cet.2, ed.2).
Jakarta:
Yudhistira.
Gaya MLA
Soeprapto, F.A.. et al.
"Linked to The World 2 : English for Senior High School Grade XI".
Cet.2, ed.2
Jakarta:
Yudhistira,
2007.
Text.