Charan, R., & Willigan, G. (2007). Know-How: The 8 Skills that Separate People Who Perform from Those Who Don't. Random House Business Books.
Lua i Stíl Chicago (17ú heag.)Charan, Ram, agus Geri Willigan. Know-How: The 8 Skills That Separate People Who Perform from Those Who Don't. London: Random House Business Books, 2007.
Lua MLA (9ú heag.)Charan, Ram, agus Geri Willigan. Know-How: The 8 Skills That Separate People Who Perform from Those Who Don't. Random House Business Books, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.