Παραπομπή σε μορφή APA (7η εκδ.)

Tillman, G. (1981). Environmentally sound small-scale water projects. Coordination in Development ; Volunteers in Technical Assistance.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tillman, Gus. Environmentally Sound Small-scale Water Projects. [New York, N.Y.] : [Mt. Rainier, Md.]: Coordination in Development ; Volunteers in Technical Assistance, 1981.

Παραπομπή σε μορφή MLA (8th εκδ.)

Tillman, Gus. Environmentally Sound Small-scale Water Projects. Coordination in Development ; Volunteers in Technical Assistance, 1981.