Calkins, T. (2012). Breakthrough Marketing Plans (2nd.). Palgrave Macmillan.
Chicago-čujuhus (17. p.)Calkins, Tim. Breakthrough Marketing Plans. 2nd. New York: Palgrave Macmillan, 2012.
MLA-čujuhus (9. p.)Calkins, Tim. Breakthrough Marketing Plans. 2nd. Palgrave Macmillan, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.