Gaya APA
ROBERT, Ronald J.. (2013).
Business essentials ninth edition (1).
Inggris.:
Pearson education..
Gaya Chicago
ROBERT, Ronald J..
Business essentials ninth edition.
1
Inggris.:
Pearson education.,
2013.
Text.
Gaya MLA
ROBERT, Ronald J..
Business essentials ninth edition.
1
Inggris.:
Pearson education.,
2013.
Text.
Gaya Turabian
ROBERT, Ronald J..
Business essentials ninth edition.
1
Inggris.:
Pearson education.,
2013.
Print.