APA   Click to copy
Clapp, J. (1997). Trade and Marketing of Agricultural Products.

Chicago/Turabian   Click to copy
Clapp, J. “Trade and Marketing of Agricultural Products” (1997).

MLA   Click to copy
Clapp, J. Trade and Marketing of Agricultural Products. 1997.

@article{j1997a,
  title = {Trade and Marketing of Agricultural Products},
  year = {1997},
  author = {Clapp, J.}
}