APA

Mccollum J. P., Ware G. W., . (1975). Producing vegetable crops / George W. Ware ; J. P. McCollum. Illinois: The Interstate Printer & Publishers.

Chicago

Mccollum J P, Ware George W, . 1975. Producing vegetable crops / George W. Ware ; J. P. McCollum. Illinois: The Interstate Printer & Publishers.

Harvard

Mccollum J. P., Ware G. W., . (1975). Producing vegetable crops / George W. Ware ; J. P. McCollum. Illinois: The Interstate Printer & Publishers.

MLA

Mccollum J P, Ware George W, . Producing vegetable crops / George W. Ware ; J. P. McCollum. Illinois: The Interstate Printer & Publishers. 1975.