Gaya APA

Andersson, C. et al (1994). Pricing and bidding (improve your construction business 1) : Workbook . Geneva: ILO.

Gaya MLA

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