APA (7th ed.) Citation

(1972). Population map 1970: Cities and municipalities, Bicol region. [s.n.].

Chicago Style (17th ed.) Citation

Population Map 1970: Cities and Municipalities, Bicol Region. [Manila]: [s.n.], 1972.

MLA (9th ed.) Citation

Population Map 1970: Cities and Municipalities, Bicol Region. [s.n.], 1972.

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