Marshall, J. (1955). Progressive secretarial course: Combining English, shorthand and typewriting. Anward Arnold.
Dyfyniad Arddull ChicagoMarshall, J. Progressive Secretarial Course: Combining English, Shorthand and Typewriting. London: Anward Arnold, 1955.
Dyfyniad MLAMarshall, J. Progressive Secretarial Course: Combining English, Shorthand and Typewriting. Anward Arnold, 1955.
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