United States Information Agency. American sketchbook. Short biosketches of 21 distinguished americans.
Citazione stile Chigago Style (17a edizione)United States Information Agency. American Sketchbook. Short Biosketches of 21 Distinguished Americans.
Citatione MLA (8a ed.)United States Information Agency. American Sketchbook. Short Biosketches of 21 Distinguished Americans.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.