Clark, Fred E.
Marketing agricultural products in the United States
Macmillan, 1933
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Neighbors taken for granted canada and the united states
Frederick A. Praeger, 1966
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Road atlas : United States, Canada and Mexico / [s.n]
Rand McNally, [Date of publication not identified]
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Directory of German studies : departments, programs, and faculties in the United States and Canada 1990
edited by. Valters Nollendorfs and Geoffrey S. Koby
German Studies Information, 1991
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Lands and peoples : the world in color, volume 6 Canada, The United States
Grolier Incorporated, 1964
 Buku Referensi