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MLA

Burtis, E.L, and F.V Waugh. "Barriers To Internal Trade In Farm Products." , 656-666.. Print

APA

Burtis, E., & Waugh, F. (0000). Barriers To Internal Trade In Farm Products.

Chicago

Burtis, E.L., and F.V Waugh. "Barriers To Internal Trade In Farm Products" (1940): 656-666..