(1972). Pre-feasibility study of Davao-Calinan-Bukidnon road. Planning and Project Development Office.
芝加哥风格引文Pre-feasibility Study of Davao-Calinan-Bukidnon Road. Manila: Planning and Project Development Office, 1972.
MLA引文Pre-feasibility Study of Davao-Calinan-Bukidnon Road. Planning and Project Development Office, 1972.
警告：这些引文格式不一定是100％准确.