Schmookler, J. (1972). Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press.
استشهاد بنمط شيكاغوSchmookler, Jacob. Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press, 1972.
MLA استشهادSchmookler, Jacob. Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.