Morgan, J. N., Baerwaldt, N., & Sirageldin, I. A. (1966). Productive Americans: A study of how individuals contribute to economic progress. Institute for Social Research, University of Michigan.
Citazione stile Chigago Style (17a edizione)Morgan, James N., Nancy Baerwaldt, e Ismail Abdel-Hamid Sirageldin. Productive Americans: A Study of How Individuals Contribute to Economic Progress. Ann Arbor: Institute for Social Research, University of Michigan, 1966.
Citatione MLA (9a ed.)Morgan, James N., et al. Productive Americans: A Study of How Individuals Contribute to Economic Progress. Institute for Social Research, University of Michigan, 1966.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.