Sanchez, A. M. (1961). Roots of the sins in the Philippine government. [s.n.].
Lua i Stíl Chicago (17ú heag.)Sanchez, Antonio M. Roots of the Sins in the Philippine Government. Manilan: [s.n.], 1961.
Lua MLA (9ú heag.)Sanchez, Antonio M. Roots of the Sins in the Philippine Government. [s.n.], 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.