Gaya APA
Siahaya, W. (2012).
Manajemen Pengadaan : Procurement Management : Academic, Business and Government .
Bandung:
Alfabeta.
Gaya MLA
Siahaya, Willem.
"Manajemen Pengadaan : Procurement Management : Academic, Business and Government".
Bandung:
Alfabeta,
2012.
Text.