Cita APA (7th ed.)

Sagayadan, C. E. Philippine stone age: A report. s.n.

Cita Chicago (17th ed.)

Sagayadan, Cynthia E. Philippine Stone Age: A Report. [S.l: s.n.

Cita MLA (9th ed.)

Sagayadan, Cynthia E. Philippine Stone Age: A Report. s.n.