Gaya APA
Business research methods. (1976).
Malang:
Richard D. Irwin, INC.
Gaya Chicago
Business research methods.
.
Malang:
Richard D. Irwin, INC,
1976.
Text.
Gaya MLA
Business research methods.
.
Malang:
Richard D. Irwin, INC,
1976.
Text.
Gaya Turabian
Business research methods.
Malang:
Richard D. Irwin, INC,
1976.
Print.