Philippines (Republic). Department of Public Works, Transportation and Communications, & Planning and Project Development Office. (1973). Feasibility report: Zamboanga secondary road package. s.n.].
Chicagoスタイル(17版)引用形式Philippines (Republic). Department of Public Works, Transportation and Communications, , Planning and Project Development Office. Feasibility Report: Zamboanga Secondary Road Package. [Manila: s.n.], 1973.
MLA(9版)引用形式Philippines (Republic). Department of Public Works, Transportation and Communications, , Planning and Project Development Office. Feasibility Report: Zamboanga Secondary Road Package. s.n.], 1973.
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