Παραπομπή σε μορφή APA (7η εκδ.)

CLIFTON, D. S., & CLIFTON, D. S. Project Feasibility Analysis A Guide To Profitable New Ventures By David S. Clifton And David E. Fyffe. John Wiley & Sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

CLIFTON, David S., και David S. CLIFTON. Project Feasibility Analysis A Guide To Profitable New Ventures By David S. Clifton And David E. Fyffe. John Wiley & Sons.

Παραπομπή σε μορφή MLA (8th εκδ.)

CLIFTON, David S., και David S. CLIFTON. Project Feasibility Analysis A Guide To Profitable New Ventures By David S. Clifton And David E. Fyffe. John Wiley & Sons.