Benham, L., & Brozen, Y. (1975). Advertising, competition, and the price of eyeglasses. American Enterprise Institute.
Citace podle Chicago (17th ed.)Benham, Lee, a Yale Brozen. Advertising, Competition, and the Price of Eyeglasses. Washington, D. C: American Enterprise Institute, 1975.
Citace podle MLA (9th ed.)Benham, Lee, a Yale Brozen. Advertising, Competition, and the Price of Eyeglasses. American Enterprise Institute, 1975.
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