Dyfyniad APA

Mercer, L. G. (1965). Adding And Calculating Machines (3rd.). McDonald and Evans.

Dyfyniad Arddull Chicago

Mercer, Lawrence G. Adding And Calculating Machines. 3rd. London: McDonald and Evans, 1965.

Dyfyniad MLA

Mercer, Lawrence G. Adding And Calculating Machines. 3rd. McDonald and Evans, 1965.

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