Kumar, S. (2018). Courgeous leadership: The missing link to creating a lean culture of excellence. Routledge.
Lua i Stíl Chicago (17ú heag.)Kumar, Sumeet. Courgeous Leadership: The Missing Link to Creating a Lean Culture of Excellence. New York: Routledge, 2018.
Lua MLA (9ú heag.)Kumar, Sumeet. Courgeous Leadership: The Missing Link to Creating a Lean Culture of Excellence. Routledge, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.