Dyfyniad APA

Jefferys, J. B. (1946). The story of the engineers, 1800-1945. Lawrence & Wishart.

Dyfyniad Arddull Chicago

Jefferys, James B. The Story of the Engineers, 1800-1945. London: Lawrence & Wishart, 1946.

Dyfyniad MLA

Jefferys, James B. The Story of the Engineers, 1800-1945. Lawrence & Wishart, 1946.

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