APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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