APA (7th ed.) Citation

National Historical Institute (Philippines). (1993). Historical markers. Republic of the Philippines, Dept. of Education, Culture and Sports, National Historical Institute.

Chicago Style (17th ed.) Citation

National Historical Institute (Philippines). Historical Markers. Manila: Republic of the Philippines, Dept. of Education, Culture and Sports, National Historical Institute, 1993.

MLA (9th ed.) Citation

National Historical Institute (Philippines). Historical Markers. Republic of the Philippines, Dept. of Education, Culture and Sports, National Historical Institute, 1993.