Gaya APA
Hasibuan, Sofia. (1986).
English for specific purposes:medicine/ Sofia Hasibuan .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Hasibuan, Sofia.
English for specific purposes:medicine/ Sofia Hasibuan.
Jakarta:
Gramedia Pustaka Utama,
1986.
Text.
Gaya MLA
Hasibuan, Sofia.
English for specific purposes:medicine/ Sofia Hasibuan.
Jakarta:
Gramedia Pustaka Utama,
1986.
Text.
Gaya Turabian
Hasibuan, Sofia.
English for specific purposes:medicine/ Sofia Hasibuan.
Jakarta:
Gramedia Pustaka Utama,
1986.
Print.