Gaya APA
Hasibuan, S.
(1986).
English For Spesific Purposes : Medicine
(
Cet. 1)
.
Jakarta:
Gramedia.
Gaya MLA
Hasibuan, Sofia.
"English For Spesific Purposes : Medicine".
Cet. 1
Jakarta:
Gramedia,
1986.
Monograf.