Kahn, C. H. (1964). Business and professional income under the personal income tax. Princeton University Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Kahn, Charles Harry. Business and Professional Income Under the Personal Income Tax. [Princeton, N.J.]: Princeton University Press, 1964.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Kahn, Charles Harry. Business and Professional Income Under the Personal Income Tax. Princeton University Press, 1964.