Kegan Robert. (2009). Immunity to change. Haward B. Press.
Chicago-čujuhus (17. p.)Kegan Robert. Immunity to Change. Delhi: Haward B. Press, 2009.
MLA-čujuhus (9. p.)Kegan Robert. Immunity to Change. Haward B. Press, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.