Helm, K. K. (1987). The entrepreneurial nutritionist. Harper & Row.
芝加哥风格引文Helm, Kathy King. The Entrepreneurial Nutritionist. New York: Harper & Row, 1987.
MLA引文Helm, Kathy King. The Entrepreneurial Nutritionist. Harper & Row, 1987.
警告：这些引文格式不一定是100％准确.