APA (7th ed.) Citation

National Historical Institute. (1992). Winning essays 1988-1991. National Historical Institute.

Chicago Style (17th ed.) Citation

National Historical Institute. Winning Essays 1988-1991. Manila: National Historical Institute, 1992.

MLA (9th ed.) Citation

National Historical Institute. Winning Essays 1988-1991. National Historical Institute, 1992.

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