Pfeffer, J. (1998). The human equation: Building profits by putting people first. Harvard business school press.
Trích dẫn kiểu ChicagoPfeffer, Jeffrey. The Human Equation: Building Profits by Putting People First. Boston: Harvard business school press, 1998.
Trích dẫn MLAPfeffer, Jeffrey. The Human Equation: Building Profits by Putting People First. Harvard business school press, 1998.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.