Cita APA (7th ed.)

Philippines. Office of the President. Presidential Economic Staff. (1969). Provincial profile of La Union. s.n.

Cita Chicago (17th ed.)

Philippines. Office of the President. Presidential Economic Staff. Provincial Profile of La Union. [Manila: s.n, 1969.

Cita MLA (9th ed.)

Philippines. Office of the President. Presidential Economic Staff. Provincial Profile of La Union. s.n, 1969.