APA način citiranja (7. izdanje)

(1972). Population and heirarchy of cities and municipalities: Bicol region. [s.n.].

Čikaški stil citiranja (17. izdanje)

Population and Heirarchy of Cities and Municipalities: Bicol Region. [Manila]: [s.n.], 1972.

MLA način citiranja (9. izdanje)

Population and Heirarchy of Cities and Municipalities: Bicol Region. [s.n.], 1972.