Παραπομπή APA

Grunberg, I., Kaul, I., & Stern, M. A. (1999). Global public goods: International cooperation in the 21st century.

Παραπομπή Chicago Style

Grunberg, Isbelle, Inge Kaul, και Marc A. Stern. Global Public Goods: International Cooperation in the 21st Century. New York, Oxford university press, 1999.

Παραπομπή MLA

Grunberg, Isbelle, et al. Global Public Goods: International Cooperation in the 21st Century. 1999.