REFERENCES

A. Its XIAO Time

B. AMBETH OCAMPO COLLECTION

C. THE FILIPINO STORY

D. Primary Sources (Original, Most Authoritative)

1. Antonio Pigafetta (1524) – Relazione del primo viaggio intorno al mondo
   → First eyewitness account of the Philippines (Magellan expedition).

2. Plasencia, Juan de (1589) – Customs of the Tagalogs (Las Costumbres de los Indios Tagalos)
   → Earliest detailed account of pre-colonial Filipino society.

3. Boxer Codex (c. 1590)
   → Illustrated ethnographic record of Filipinos and Asians.

4. Laguna Copperplate Inscription (c. 900 AD)
   → Oldest known written document found in the Philippines.

5. Spanish Colonial Records (Archivo General de Indias, Spain)
   → Official colonial administrative records.

Classic Scholarly Works (Peer-Reviewed & Highly Credible)

6. Blair & Robertson (1903–1909) – The Philippine Islands, 1493–1898 (55 volumes)
   → Most comprehensive collection of Spanish-era documents.

7. William Henry Scott (1984) – Prehispanic Source Materials for the Study of Philippine History
   → Gold-standard critique of early Philippine sources.

8. Teodoro A. Agoncillo (1960) – History of the Filipino People
   → Nationalist historical framework.

9. Renato Constantino (1975) – A Past Revisited
   → Critical interpretation of colonial history.

10. Zeus A. Salazar (1998) – Pantayong Pananaw
    → Filipino-centered historiography.
    Archaeological & Scientific Evidence

11. Callao Man Remains (67,000 years ago)
    → National Museum & international journals (Nature, Journal of Human Evolution).
    
    

12. Tabon Caves Archaeological Finds
    → Earliest Homo sapiens evidence in PH.
    
    

13. Butuan Balangay Boats (320 AD)
    → Proof of advanced precolonial maritime culture.
    
    

Official Philippine Institutions (Most Reliable Local Sources)

14. National Historical Commission of the Philippines (NHCP)
    → Official historical authority
    
    

15. National Museum of the Philippines
    
    

16. University of the Philippines – Department of History
    International Academic Sources

17. Encyclopaedia Britannica – Philippine History Sections
    
    

18. Cambridge History of Southeast Asia
    
    

19. Journal of Southeast Asian Studies
    
    

Legal Recognition of Historical Facts

20. Republic Acts, Presidential Proclamations, NHCP Resolutions
    → Legal validation of historical events and sites
    Most Irrefutable Evidence Hierarchy (for Teaching & Research)

Archaeological artifacts
→ Primary documents
→ Peer-reviewed academic studies
→ Official government records