APA (7th ed.) Citation

Norman, G., & Thisse, J. F. (1994). The Economics of product differentiation. E. Elgar.

Chicago Style (17th ed.) Citation

Norman, George, and Jacques Francois Thisse. The Economics of Product Differentiation. Aldershot, Hants, England: E. Elgar, 1994.

MLA (9th ed.) Citation

Norman, George, and Jacques Francois Thisse. The Economics of Product Differentiation. E. Elgar, 1994.