Liwag, J. R. (1971). Constitutional reforms 1971. s.n.
Lua i Stíl Chicago (17ú heag.)Liwag, Juan R. Constitutional Reforms 1971. [Manila: s.n, 1971.
Lua MLA (9ú heag.)Liwag, Juan R. Constitutional Reforms 1971. s.n, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.