المؤلفون: Goodwin, Barry K., Holt, Matthew T.

المصدر: American Journal of Agricultural Economics, 1999 Aug 01. 81(3), 630-637.

URL الوصول: https://www.jstor.org/stable/1244026

المؤلفون: Lusk, Jayson L., Marsh, Thomas L., Schroeder, Ted C., Fox, John A.

المصدر: Journal of Agricultural and Resource Economics, 2001 Jul 01. 26(1), 91-106.

URL الوصول: https://www.jstor.org/stable/40987097

المؤلفون: Hahn, William F., Green, Richard D.

المصدر: Journal of Agricultural and Resource Economics, 2000 Jul 01. 25(1), 109-127.

URL الوصول: https://www.jstor.org/stable/40987051

المؤلفون: Wohlgenant, Michael K.

المصدر: American Journal of Agricultural Economics, 1985 Nov 01. 67(4), 739-748.

URL الوصول: https://www.jstor.org/stable/1241813

المؤلفون: Schroeder, Ted C., Hayenga, Marvin L.

المصدر: North Central Journal of Agricultural Economics, 1987 Jul 01. 9(2), 171-180.

URL الوصول: https://www.jstor.org/stable/1349387

المؤلفون: Porter, G. R.

المصدر: Journal of the Statistical Society of London, 1850 Aug 01. 13(3), 210-218.

URL الوصول: https://www.jstor.org/stable/2338144

المصدر: The Annals of the American Academy of Political and Social Science, 1923 May 01. 107, 149-154.

URL الوصول: https://www.jstor.org/stable/1014709

المؤلفون: Davis, J.

المصدر: Irish Journal of Agricultural Economics and Rural Sociology, 1980 Jan 01. 8(1), 27-35.

URL الوصول: https://www.jstor.org/stable/25556454

المصدر: Monthly Review of the U.S. Bureau of Labor Statistics, 1918 Jun 01. 6(6), 77-107.

URL الوصول: https://www.jstor.org/stable/41842757

المصدر: Monthly Review of the U.S. Bureau of Labor Statistics, 1918 Mar 01. 6(3), 99-117.

URL الوصول: https://www.jstor.org/stable/41829301