APA ציטוט

Fabricant, S. (1972). Productivity in the tertiary sector. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Fabricant, Solomon. Productivity in the Tertiary Sector. New York: National Bureau of Economic Research, 1972.

ציטוט MLA

Fabricant, Solomon. Productivity in the Tertiary Sector. National Bureau of Economic Research, 1972.