APA استشهاد

Roper, A. T. (2011). Forecasting and management of technology (2nd ed.). John Wiley & Sons.

استشهاد بنمط شيكاغو

Roper, A. T. Forecasting and Management of Technology. 2nd ed. Hoboken, N.J.: John Wiley & Sons, 2011.

MLA استشهاد

Roper, A. T. Forecasting and Management of Technology. 2nd ed. John Wiley & Sons, 2011.