Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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