Παραπομπή σε μορφή APA (7η εκδ.)

Gittinger, J. P. (1966). The literature of agricultural planning. National Planning Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gittinger, James Price. The Literature of Agricultural Planning. [Washington]: National Planning Association, 1966.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gittinger, James Price. The Literature of Agricultural Planning. National Planning Association, 1966.