APA (7th ed.) Citation

National Historical Commission. (1996). Historical calendar (2nd,1996, Rev.ed. 1999.). National Historical Institute.

Chicago Style (17th ed.) Citation

National Historical Commission. Historical Calendar. 2nd,1996, Rev.ed. 1999. Manila: National Historical Institute, 1996.

MLA (9th ed.) Citation

National Historical Commission. Historical Calendar. 2nd,1996, Rev.ed. 1999. National Historical Institute, 1996.