Ropper AH, Brown RH (2005). "14: disorders of ocular movement and pupillary function". ใน Ropper AH, Brown RH (บ.ก.). Adams and Victor's Principles of Neurology (8th ed.). New York: McGraw-Hill Professional. pp. 222–45. doi:10.1036/0071469710 (inactive 2021-01-11). ISBN0-07-141620-X.{{cite book}}: CS1 maint: DOI inactive as of มกราคม 2021 (ลิงก์)