Mantell, M. I. (1963). Orientation in engineering (2nd ed.). National Book Store.
Dyfyniad Arddull ChicagoMantell, Murray I. Orientation in Engineering. 2nd ed. Manila: National Book Store, 1963.
Dyfyniad MLAMantell, Murray I. Orientation in Engineering. 2nd ed. National Book Store, 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.