APA (7th ed.) Citation

(1981). IBON teacher's manual on Philippine history (2nd ed.). IBON Databank.

Chicago Style (17th ed.) Citation

IBON Teacher's Manual on Philippine History. 2nd ed. Manila: IBON Databank, 1981.

MLA (9th ed.) Citation

IBON Teacher's Manual on Philippine History. 2nd ed. IBON Databank, 1981.

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