Gaya APA
Siahaya, W. (2016).
Manajemen pengadaan = procurement management : ABG academic business government (Cet. 3).
Bogor:
Penerbit In Media.
Gaya MLA
Siahaya, Willem.
"Manajemen pengadaan = procurement management : ABG academic business government".
Cet. 3
Bogor:
Penerbit In Media,
2016.
Text.