Cita APA

Helpman, E., & Krugman, P. (1985). Market structure and foreing trade: Increasing returns, imperfect competition, and the international economy. Cambridge: MIT Press.

Citación estilo Chicago

Helpman, Elhanan, y Paul Krugman. Market Structure and Foreing Trade: Increasing Returns, Imperfect Competition, and the International Economy. Cambridge: MIT Press, 1985.

Cita MLA

Helpman, Elhanan, y Paul Krugman. Market Structure and Foreing Trade: Increasing Returns, Imperfect Competition, and the International Economy. Cambridge: MIT Press, 1985.