(1972). Pre-feasibility study of Davao-Calinan-Bukidnon road. Planning and Project Development Office.
Chicago-Zitierstil (17. Ausg.)Pre-feasibility Study of Davao-Calinan-Bukidnon Road. Manila: Planning and Project Development Office, 1972.
MLA-Zitierstil (9. Ausg.)Pre-feasibility Study of Davao-Calinan-Bukidnon Road. Planning and Project Development Office, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.