Dyfyniad APA

Park, C. S. (2007). Contemporary engineering economics (4th ed.). Pearson Prentice-Hall.

Dyfyniad Arddull Chicago

Park, Chan S. Contemporary Engineering Economics. 4th ed. Upper Saddle River, N.J: Pearson Prentice-Hall, 2007.

Dyfyniad MLA

Park, Chan S. Contemporary Engineering Economics. 4th ed. Pearson Prentice-Hall, 2007.

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