Greenfield, H. I. (1966). Manpower and the growth of producer services. New York: Columbia University Press.
استشهاد بنمط شيكاغوGreenfield, Harry I. Manpower and the Growth of Producer Services. New York: Columbia University Press, 1966.
MLA استشهادGreenfield, Harry I. Manpower and the Growth of Producer Services. New York: Columbia University Press, 1966.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.