Παραπομπή σε μορφή APA (7η εκδ.)

Kravis, I. B., & Lipsey, R. E. (1966). Comparative prices of nonferrous metals in international trade, 1953-64. National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kravis, Irving B., και Robert E. Lipsey. Comparative Prices of Nonferrous Metals in International Trade, 1953-64. New York: National Bureau of Economic Research, 1966.

Παραπομπή σε μορφή MLA (9th εκδ.)

Kravis, Irving B., και Robert E. Lipsey. Comparative Prices of Nonferrous Metals in International Trade, 1953-64. National Bureau of Economic Research, 1966.