APA (7th ed.) Citation

Orosa, S. Y. (1964). Mabini: Centenary issue. [Philippine Historical Association].

Chicago Style (17th ed.) Citation

Orosa, Sixto Y. Mabini: Centenary Issue. Manila: [Philippine Historical Association], 1964.

MLA (9th ed.) Citation

Orosa, Sixto Y. Mabini: Centenary Issue. [Philippine Historical Association], 1964.