APA Style
HASIBUAN, H. Sofia Rangkuti. (1986).
English for specific purposes: economics .
Jakarta:
Gramedia.
Chicago Style
HASIBUAN, H. Sofia Rangkuti.
English for specific purposes: economics.
Jakarta:
Gramedia,
1986.
Text.
MLA Style
HASIBUAN, H. Sofia Rangkuti.
English for specific purposes: economics.
Jakarta:
Gramedia,
1986.
Text.
Turabian Style
HASIBUAN, H. Sofia Rangkuti.
English for specific purposes: economics.
Jakarta:
Gramedia,
1986.
Print.