APA (7th ed.) Citation

Zaide, G. F. (1979). Philippine history for high schools (Rev. ed.). The Modern Book Co.

Chicago Style (17th ed.) Citation

Zaide, Gregorio F. Philippine History for High Schools. Rev. ed. Manila: The Modern Book Co, 1979.

MLA (9th ed.) Citation

Zaide, Gregorio F. Philippine History for High Schools. Rev. ed. The Modern Book Co, 1979.