Gaya APA
Leenders, . et al
(2002).
Purchasing and Supply Management
(
ke duabelas)
.
Yogyakarta:
Salemba Empat.
Gaya MLA
Leenders, . et al.
"Purchasing and Supply Management".
ke duabelas
Yogyakarta:
Salemba Empat,
2002.
Text.