Gaya APA
Andersson, C. et al (1994).
Pricing and bidding (improve your construction business 1) : Handbook .
Geneva:
ILO.
Gaya MLA
Andersson, Claes-Axel. et al.
"Pricing and bidding (improve your construction business 1) : Handbook".
Geneva:
ILO,
1994.
Buku/Printed Material.