Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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