APA Style
RANGKUTI-HASIBUAN, SOFIA. (1998).
English serial 1 : economics (1).
:
.
Chicago Style
RANGKUTI-HASIBUAN, SOFIA.
English serial 1 : economics.
1
:
,
1998.
TXB.
MLA Style
RANGKUTI-HASIBUAN, SOFIA.
English serial 1 : economics.
1
:
,
1998.
TXB.
Turabian Style
RANGKUTI-HASIBUAN, SOFIA.
English serial 1 : economics.
1
:
,
1998.
TXB.