APA

Pratt John W, Zeckhauser Richard J, . (1991). Principals and agents : The structure of business. Boston: Harvard Business School Press.

Chicago

Pratt John W, Zeckhauser Richard J, . 1991. Principals and agents : The structure of business. Boston: Harvard Business School Press.

Harvard

Pratt John W, Zeckhauser Richard J, . (1991). Principals and agents : The structure of business. Boston: Harvard Business School Press.

MLA

Pratt John W, Zeckhauser Richard J, . Principals and agents : The structure of business. Boston: Harvard Business School Press. 1991.