Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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