Cita APA (7th ed.)

(1972). Proposed road construction and /or improvement for the Bicol region. [s.n.].

Cita Chicago (17th ed.)

Proposed Road Construction and /or Improvement for the Bicol Region. [Manila]: [s.n.], 1972.

Cita MLA (9th ed.)

Proposed Road Construction and /or Improvement for the Bicol Region. [s.n.], 1972.

Atenció: Aquestes cites poden no estar 100% correctes.