APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.