David, V. A. C. (2003). Pretty please, with sugar on top! persuasion in the workplace. University of the Philippines Diliman Extension Program in Pampanga.
Citazione stile Chigago Style (17a edizione)David, Vonn Angelie C. Pretty Please, with Sugar on Top! Persuasion in the Workplace. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2003.
Citatione MLA (9a ed.)David, Vonn Angelie C. Pretty Please, with Sugar on Top! Persuasion in the Workplace. University of the Philippines Diliman Extension Program in Pampanga, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.