Peter, N. (1965). Theory of exchange. Prentice-Hall.
Cita Chicago (17th ed.)Peter, NEWMAN. Theory of Exchange. New Jersey: Prentice-Hall, 1965.
Cita MLA (9th ed.)Peter, NEWMAN. Theory of Exchange. Prentice-Hall, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.