APA (7th ed.) Citation

Valencia, E. I. (1977). President Sergio Osmena. s.n.] Regal Printing.

Chicago Style (17th ed.) Citation

Valencia, Elpidio I. President Sergio Osmena. [s.l., Manila: s.n.] Regal Printing, 1977.

MLA (9th ed.) Citation

Valencia, Elpidio I. President Sergio Osmena. s.n.] Regal Printing, 1977.