APA استشهاد

Kahn, H. C. (1964). Business and professional income under the personal income tax. National bureau Economic research.

استشهاد بنمط شيكاغو

Kahn, Harry C. Business and Professional Income Under the Personal Income Tax. New York: National bureau Economic research, 1964.

MLA استشهاد

Kahn, Harry C. Business and Professional Income Under the Personal Income Tax. National bureau Economic research, 1964.