Cita APA (7th ed.)

O'Brien, J. J. (1968). The historical and cultural heritage of the Bicol people (2nd ed.). Ateneo de Naga].

Cita Chicago (17th ed.)

O'Brien, James Jerome. The Historical and Cultural Heritage of the Bicol People. 2nd ed. [Naga City: Ateneo de Naga], 1968.

Cita MLA (9th ed.)

O'Brien, James Jerome. The Historical and Cultural Heritage of the Bicol People. 2nd ed. Ateneo de Naga], 1968.