APA Style
Siahaan, Janpie. (2009).
Managing Competition .
Jakarta:
Salemba Empat.
Chicago Style
Siahaan, Janpie.
Managing Competition.
Jakarta:
Salemba Empat,
2009.
Buku.
MLA Style
Siahaan, Janpie.
Managing Competition.
Jakarta:
Salemba Empat,
2009.
Buku.
Turabian Style
Siahaan, Janpie.
Managing Competition.
Jakarta:
Salemba Empat,
2009.
Buku.