Villegas, B. M. (2001). The Philippine advantage. Published by University of Asia and the Pacific, in cooperation with Shell Companies in the Philippines.
Lua i Stíl Chicago (17ú heag.)Villegas, Bernardo M. The Philippine Advantage. Metro Manila: Published by University of Asia and the Pacific, in cooperation with Shell Companies in the Philippines, 2001.
Lua MLA (9ú heag.)Villegas, Bernardo M. The Philippine Advantage. Published by University of Asia and the Pacific, in cooperation with Shell Companies in the Philippines, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.