Paras, E. L. (1968). Taxation fundamentals (2nd ed.). Rex Book Store.
Lua i Stíl Chicago (17ú heag.)Paras, Edgardo Lardizabal. Taxation Fundamentals. 2nd ed. Manila: Rex Book Store, 1968.
Lua MLA (9ú heag.)Paras, Edgardo Lardizabal. Taxation Fundamentals. 2nd ed. Rex Book Store, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.