Gaya APA
SIAHAYA, W. (2016).
Manajemen pengadaan procurement management ABG (Academic Business Government) (Cet. III).
Bogor:
In media.
Gaya MLA
SIAHAYA, Willem.
"Manajemen pengadaan procurement management ABG (Academic Business Government)".
Cet. III
Bogor:
In media,
2016.
FE-Manajemen.