Fuchs, V. R., & Wilburn, J. A. (1967). Productivity differences within the service sector. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Fuchs, Victor Robert, e Jean Alexander Wilburn. Productivity Differences Within the Service Sector. New York: National Bureau of Economic Research, 1967.
Citatione MLA (9a ed.)Fuchs, Victor Robert, e Jean Alexander Wilburn. Productivity Differences Within the Service Sector. National Bureau of Economic Research, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.