Gaya APA
Business Research Methods -Revised Edition. (1980).
Jakarta:
.
Gaya Chicago
Business Research Methods -Revised Edition.
Edisi Pertama.
Jakarta:
,
1980.
Text.
Gaya MLA
Business Research Methods -Revised Edition.
Edisi Pertama.
Jakarta:
,
1980.
Text.
Gaya Turabian
Business Research Methods -Revised Edition.
Jakarta:
,
1980.
Print.