Gaya APA
Operation research. (2004).
Malang:
Banyumedia.
Gaya Chicago
Operation research.
1.
Malang:
Banyumedia,
2004.
Buku.
Gaya MLA
Operation research.
1.
Malang:
Banyumedia,
2004.
Buku.
Gaya Turabian
Operation research.
Malang:
Banyumedia,
2004.
Buku.