Klee, V. (1991). Old and new usloved problems in plane geometry and number theory. MAA.
استشهاد بنمط شيكاغوKlee, Vict. Old and New Usloved Problems in Plane Geometry and Number Theory. MAA, 1991.
MLA استشهادKlee, Vict. Old and New Usloved Problems in Plane Geometry and Number Theory. MAA, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.