APA (7th ed.) Citation

Perrett, H., & Lethem, F. J. (1980). Human factors in project work. World Bank.

Chicago Style (17th ed.) Citation

Perrett, Heli, and Francis J. Lethem. Human Factors in Project Work. Washington, D.C: World Bank, 1980.

MLA (9th ed.) Citation

Perrett, Heli, and Francis J. Lethem. Human Factors in Project Work. World Bank, 1980.