Gaya APA
Operation research. (1998).
Malang:
BP ITN Malang.
Gaya Chicago
Operation research.
.
Malang:
BP ITN Malang,
1998.
Text.
Gaya MLA
Operation research.
.
Malang:
BP ITN Malang,
1998.
Text.
Gaya Turabian
Operation research.
Malang:
BP ITN Malang,
1998.
Print.