Ambar, S. M. (2012). How governors built the modern American presidency. University of Pennsylvania Press.
Chicago-čujuhus (17. p.)Ambar, Saladin M. How Governors Built the Modern American Presidency. Philadelphia: University of Pennsylvania Press, 2012.
MLA-čujuhus (9. p.)Ambar, Saladin M. How Governors Built the Modern American Presidency. University of Pennsylvania Press, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.