Gopalakrishnan Udayakumar. (2016). What it takes to be a Leader with Passion. Notion Press.
Chicago-čujuhus (17. p.)Gopalakrishnan Udayakumar. What It Takes to Be a Leader with Passion. Chennai: Notion Press, 2016.
MLA-čujuhus (9. p.)Gopalakrishnan Udayakumar. What It Takes to Be a Leader with Passion. Notion Press, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.