Gaya APA
Silaen, Sofar. (2014).
Riset Operasi .
Bogor:
IN MEDIA.
Gaya Chicago
Silaen, Sofar.
Riset Operasi.
Bogor:
IN MEDIA,
2014.
Text.
Gaya MLA
Silaen, Sofar.
Riset Operasi.
Bogor:
IN MEDIA,
2014.
Text.
Gaya Turabian
Silaen, Sofar.
Riset Operasi.
Bogor:
IN MEDIA,
2014.
Print.