Butterfield, K. L. Proceedings of second Pan American scientific congress: The agricultural college and the working farmer.
Chicago Style (17th ed.) CitationButterfield, Kenyon L. Proceedings of Second Pan American Scientific Congress: The Agricultural College and the Working Farmer.
MLA (9th ed.) CitationButterfield, Kenyon L. Proceedings of Second Pan American Scientific Congress: The Agricultural College and the Working Farmer.