Gaya APA
Rangkuti-Hasibuan, Sofia. (1992).
English for specific purposes : tourism 1 .
Jakarta:
Dian Rakyat.
Gaya Chicago
Rangkuti-Hasibuan, Sofia.
English for specific purposes : tourism 1.
Jakarta:
Dian Rakyat,
1992.
Text.
Gaya MLA
Rangkuti-Hasibuan, Sofia.
English for specific purposes : tourism 1.
Jakarta:
Dian Rakyat,
1992.
Text.
Gaya Turabian
Rangkuti-Hasibuan, Sofia.
English for specific purposes : tourism 1.
Jakarta:
Dian Rakyat,
1992.
Print.