Buffett, Mary. Warren Buffett's management secrets : proven tools for personal and business success / Management secrets Mary Buffett & David Clark. - London : Simon & Schuster, c2009. - xix, 148 p ; 20 cm. Includes index. ISBN: 9781847376923 Subjects--Personal Names: Subjects--Topical Terms: Success in business.Management.Decision making. Dewey Class. No.: