APA aipamena

Fried, C. (1981). Contract as promise: A theory of contractual obligation. Harvard University Press, 1981.

Chicago Style aipamena

Fried, Charles. Contract as Promise: A Theory of Contractual Obligation. Cambridge, Massachusetts: Harvard University Press, 1981, 1981.

MLA aipamena

Fried, Charles. Contract as Promise: A Theory of Contractual Obligation. Harvard University Press, 1981, 1981.