Jessup, W. E. (1963). Law and specifications for engineers and scientists. Prentice-Hall.
Dyfyniad Arddull ChicagoJessup, Walter Edgar. Law and Specifications for Engineers and Scientists. Englewood Cliffs, N.J.: Prentice-Hall, 1963.
Dyfyniad MLAJessup, Walter Edgar. Law and Specifications for Engineers and Scientists. Prentice-Hall, 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.