APA (7. basım) Alıntı

Helpman, E., Coe, D., & Hoffmaister, W. (1994). North-South RandD Spillovers. International Monetary Fund.

Chicago Style (17. basım) Atıf

Helpman, Elhanan, David Coe, ve Willy Hoffmaister. North-South RandD Spillovers. Washington, D.C.: International Monetary Fund, 1994.

MLA (8th ed.) Atıf

Helpman, Elhanan, et al. North-South RandD Spillovers. International Monetary Fund, 1994.