Finkle, J. (1998). Viagra heats up war among firms promising cure for impotence. Manila Times.
Lua i Stíl Chicago (17ú heag.)Finkle, Jim. "Viagra Heats Up War Among Firms Promising Cure for Impotence." Manila Times 1998.
Lua MLA (9ú heag.)Finkle, Jim. "Viagra Heats Up War Among Firms Promising Cure for Impotence." Manila Times, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.