Gaya APA
Research methods for bisiness. (2006).
Jakarta:
Salemba Empat.
Gaya Chicago
Research methods for bisiness.
Edisi.
Jakarta:
Salemba Empat,
2006.
.
Gaya MLA
Research methods for bisiness.
Edisi.
Jakarta:
Salemba Empat,
2006.
.
Gaya Turabian
Research methods for bisiness.
Jakarta:
Salemba Empat,
2006.
.