Style de citation APA (7e éd.)

Danhof, C. H. (1969). Change in agriculture: The northern United States, 1820-1870. Harvard University Press.

Style de citation Chicago (17e éd.)

Danhof, Clarence H. Change in Agriculture: The Northern United States, 1820-1870. Cambridge: Harvard University Press, 1969.

Style de citation MLA (8e éd.)

Danhof, Clarence H. Change in Agriculture: The Northern United States, 1820-1870. Harvard University Press, 1969.