APA (7th ed.) Citation

Ordonez, M. A. (1959). Notes on Philippine history. s.n.

Chicago Style (17th ed.) Citation

Ordonez, Marcelo A. Notes on Philippine History. [S.l: s.n, 1959.

MLA (9th ed.) Citation

Ordonez, Marcelo A. Notes on Philippine History. s.n, 1959.