APA-viite (7. p.)

Bernal, R., & Echevarria, R. (1967). Prologue to Philippine history. Solidaridad Pub. House.

Chicago-viite (17. p.)

Bernal, Rafael, ja Ramon Echevarria. Prologue to Philippine History. Manila: Solidaridad Pub. House, 1967.

MLA-viite (9. p.)

Bernal, Rafael, ja Ramon Echevarria. Prologue to Philippine History. Solidaridad Pub. House, 1967.