Dyfyniad APA

Bright, J. R., & Schoeman, M. E. (1973). Guide to practical technological forecasting. Prentice hall.

Dyfyniad Arddull Chicago

Bright, James R., and Milton E.F Schoeman. Guide to Practical Technological Forecasting. New Jersey: Prentice hall, 1973.

Dyfyniad MLA

Bright, James R., and Milton E.F Schoeman. Guide to Practical Technological Forecasting. Prentice hall, 1973.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.