Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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