APA Edition Citation

Smith, J. R. (1978). Tree crops a permenent agriculture. Harper Colopen Books.

Chicago Edition Citation

Smith, J R. Tree Crops a Permenent Agriculture. London: Harper Colopen Books, 1978.

MLA Edition Citation

Smith, J R. Tree Crops a Permenent Agriculture. Harper Colopen Books, 1978.

Warning: These citations may not always be 100% accurate.