Gaya APA
SEKARAN, U., BOUGIE, R. (2010).
Research Methods For Business A Skill Building Approach Edisi 5 (5).
Jakarta:
Salemba Empat.
Gaya MLA
SEKARAN, Uma., BOUGIE, Roger.
"Research Methods For Business A Skill Building Approach Edisi 5".
5
Jakarta:
Salemba Empat,
2010.
Buku.