APA (7 ম সংস্করণ) উদ্ধৃতি

Middleton, T. C. (1907). State of Geographical Knowledge at the Time of the Discovery of America, A.D. 1492. Delaware Co., Pa..

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Middleton, Thomas C. State of Geographical Knowledge at the Time of the Discovery of America, A.D. 1492. Delaware Co., Pa., 1907.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Middleton, Thomas C. State of Geographical Knowledge at the Time of the Discovery of America, A.D. 1492. Delaware Co., Pa., 1907.