APA

Mighell R. L., Black J. D., Harvard University Committee on Research in the Social Sciences & United States Bureau of Agricultural Economics. (1951). Interregional competition in agriculture, with special reference to diary farming in the Lake States and New England. Cambridge: Harvard University Press.

Chicago

Mighell Ronald Lester, Black John Donald, Harvard University Committee on Research in the Social Sciences and United States Bureau of Agricultural Economics. 1951. Interregional competition in agriculture, with special reference to diary farming in the Lake States and New England. Cambridge: Harvard University Press.

Harvard

Mighell R. L., Black J. D., Harvard University Committee on Research in the Social Sciences and United States Bureau of Agricultural Economics. (1951). Interregional competition in agriculture, with special reference to diary farming in the Lake States and New England. Cambridge: Harvard University Press.

MLA

Mighell Ronald Lester, Black John Donald, Harvard University Committee on Research in the Social Sciences and United States Bureau of Agricultural Economics. Interregional competition in agriculture, with special reference to diary farming in the Lake States and New England. Cambridge: Harvard University Press. 1951.