Gray, A. W., & Ulm, O. M. (1975). Mathematics for College Students Elementary Concepts. Beverly Hills, California: Glencoe Press.
استشهاد بنمط شيكاغوGray, A. William, و Otis M. Ulm. Mathematics for College Students Elementary Concepts. Beverly Hills, California: Glencoe Press, 1975.
MLA استشهادGray, A. William, و Otis M. Ulm. Mathematics for College Students Elementary Concepts. Beverly Hills, California: Glencoe Press, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.