(2011). Peterson's graduate programs in the physical sciences, mathematics, agricultural sciences, the environment & natural resources 2011 (45th ed.). Lawreceville, N.J.: Peterson's.
استشهاد بنمط شيكاغوPeterson's Graduate Programs in the Physical Sciences, Mathematics, Agricultural Sciences, the Environment & Natural Resources 2011. 45th ed. Lawreceville, N.J.: Peterson's, 2011.
MLA استشهادPeterson's Graduate Programs in the Physical Sciences, Mathematics, Agricultural Sciences, the Environment & Natural Resources 2011. 45th ed. Lawreceville, N.J.: Peterson's, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.