Cita APA (7th ed.)

Fuchs, V. R., & Wilburn, J. A. (1967). Productivity differences within the service sector. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Fuchs, Victor Robert, i Jean Alexander Wilburn. Productivity Differences Within the Service Sector. New York: National Bureau of Economic Research, 1967.

Cita MLA (9th ed.)

Fuchs, Victor Robert, i Jean Alexander Wilburn. Productivity Differences Within the Service Sector. National Bureau of Economic Research, 1967.