Dyfyniad APA

Philippines (Republic). National Economic Council. (1967). Economic survey of the province of Bulacan. [s.n.].

Dyfyniad Arddull Chicago

Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. Manila: [s.n.], 1967.

Dyfyniad MLA

Philippines (Republic). National Economic Council. Economic Survey of the Province of Bulacan. [s.n.], 1967.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.