Παραπομπή σε μορφή APA (7η εκδ.)

Cummings, R., Jr. (1972). Contribution of three recent studies to improving the information base on which to plan the rice sector in Repelita II.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cummings, Ralph, Jr. Contribution of Three Recent Studies to Improving the Information Base on Which to Plan the Rice Sector in Repelita II. [n.p.], 1972.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cummings, Ralph, Jr. Contribution of Three Recent Studies to Improving the Information Base on Which to Plan the Rice Sector in Repelita II. 1972.