Clarkson, K. W. (1977). Intangible capital and rates of return: Effects of research and promotion on profitability. American Enterprise Institute for Public Policy Research.
Citazione stile Chigago Style (17a edizione)Clarkson, Kenneth W. Intangible Capital and Rates of Return: Effects of Research and Promotion on Profitability. Washington: American Enterprise Institute for Public Policy Research, 1977.
Citatione MLA (8a ed.)Clarkson, Kenneth W. Intangible Capital and Rates of Return: Effects of Research and Promotion on Profitability. American Enterprise Institute for Public Policy Research, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.