APA (7e ed.) Bronvermelding

(1968). Municipality of Bulacan, province of Bulacan: B.D. Fabila and D.M. Frogoso. [s.n.].

Chicago (17e ed.) Bronvermelding

Municipality of Bulacan, Province of Bulacan: B.D. Fabila and D.M. Frogoso. [Manila]: [s.n.], 1968.

MLA (9e ed.) Bronvermelding

Municipality of Bulacan, Province of Bulacan: B.D. Fabila and D.M. Frogoso. [s.n.], 1968.

Let op: Deze citaties zijn niet altijd 100% accuraat.