CHRISTIAWAN. (1988). Proffesional Development Of Indonesian Contractors For Preparation Of Overseas Construction Business By Christiawan. Project University.
Čikaški stil citiranja (17. izdanje)CHRISTIAWAN. Proffesional Development Of Indonesian Contractors For Preparation Of Overseas Construction Business By Christiawan. Project University, 1988.
MLA način citiranja (8. izdanje)CHRISTIAWAN. Proffesional Development Of Indonesian Contractors For Preparation Of Overseas Construction Business By Christiawan. Project University, 1988.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.