Gaya APA
Siahaya, W. (2016).
Manajemen pengadaan procurement management ABG (Academic Business Government) (Cetakan III).
Bogor:
IN MEDIA.
Gaya MLA
Siahaya, Willem.
"Manajemen pengadaan procurement management ABG (Academic Business Government)".
Cetakan III
Bogor:
IN MEDIA,
2016.
Fakultas Bisnis.