APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.