Philippines (Republic). National Economic Council. (1967). Economic survey of the province of Bulacan. [s.n.].
Chicago-Zitierstil (17. Ausg.)Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. Manila: [s.n.], 1967.
MLA-Zitierstil (9. Ausg.)Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. [s.n.], 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.