Popovich, I. (2004). kaizen and you. Jaico.
Lua i Stíl Chicago (17ú heag.)Popovich, Igor. Kaizen and You. Mumbai: Jaico, 2004.
Lua MLA (9ú heag.)Popovich, Igor. Kaizen and You. Jaico, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.