Beach, D. I., & Ovens, G. (1972). Business and securities valuation. Methuen.
Chicago Style (17. basım) AtıfBeach, Donald I., ve Geo Ovens. Business and Securities Valuation. Toronto: Methuen, 1972.
MLA (9th ed.) AtıfBeach, Donald I., ve Geo Ovens. Business and Securities Valuation. Methuen, 1972.
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