Gaya APA

Fyffe, D, E., Jr., D, S, C. (1977). Project Feasibility Analysis : A Guide to Profitable New Ventures ( - ). Amerika: John Wiley & Sons.

Gaya MLA

Fyffe, David, E.., Jr., David, S., Clifton. "Project Feasibility Analysis : A Guide to Profitable New Ventures". - Amerika: John Wiley & Sons, 1977. Buku Teks.