APA (7. basım) Alıntı

(1972). Area of influences: Road network of the Bicol region. [s.n.].

Chicago Style (17. basım) Atıf

Area of Influences: Road Network of the Bicol Region. [Manila]: [s.n.], 1972.

MLA (9th ed.) Atıf

Area of Influences: Road Network of the Bicol Region. [s.n.], 1972.