APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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