Cita APA (7th ed.)

Graham, E. M., & Krugman, P. R. (1989). Foreign direct investment in the United States (2nd ed.). Institute for International Economics.

Cita Chicago (17th ed.)

Graham, Edward Montgomery, i Paul R. Krugman. Foreign Direct Investment in the United States. 2nd ed. Washington, D.C: Institute for International Economics, 1989.

Cita MLA (9th ed.)

Graham, Edward Montgomery, i Paul R. Krugman. Foreign Direct Investment in the United States. 2nd ed. Institute for International Economics, 1989.