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- [25] Costs and Profits in Marketing ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1940, 209 : 122 - 132
- [27] Costs and Margins in Marketing ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1925, 117 : 184 - 200
- [28] THE NATURE OF MARKETING COSTS JOURNAL OF BUSINESS OF THE UNIVERSITY OF CHICAGO, 1943, 16 (01): : 7 - 13