Παραπομπή σε μορφή APA (7η εκδ.)

Shively, G. E. (1996). Upland corn yields in a contour hedgerow system: A production function approach. SEAMEO Regional Center for Graduate Study and Research in Agriculture.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Shively, Gerald E. Upland Corn Yields in a Contour Hedgerow System: A Production Function Approach. Los Baños, Laguna: SEAMEO Regional Center for Graduate Study and Research in Agriculture, 1996.

Παραπομπή σε μορφή MLA (9th εκδ.)

Shively, Gerald E. Upland Corn Yields in a Contour Hedgerow System: A Production Function Approach. SEAMEO Regional Center for Graduate Study and Research in Agriculture, 1996.