Roy, R. (2011). Entrepreneurship. Pearson Education.
Chicago-čujuhus (17. p.)Roy, Rajeev. Entrepreneurship. Harlow: Pearson Education, 2011.
MLA-čujuhus (9. p.)Roy, Rajeev. Entrepreneurship. Pearson Education, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.