APA aipamena

Gray, H. P. (1976). A generalized theory of international trade. Macmillan.

Chicago Style aipamena

Gray, H. Peter. A Generalized Theory of International Trade. London: Macmillan, 1976.

MLA aipamena

Gray, H. Peter. A Generalized Theory of International Trade. Macmillan, 1976.