Gaya APA
Siahaya, W. (2014).
Manajemen pengadaan procurment management: ABG (Academic Business Goverment) (1).
Jakarta:
IN MEDIA.
Gaya MLA
Siahaya, Willem.
"Manajemen pengadaan procurment management: ABG (Academic Business Goverment)".
1
Jakarta:
IN MEDIA,
2014.
Text.