Hoggatt, J. P. (2004). Century 21 keyboarding & information processing: Jack P. Hoggatt, Jon A. Shank andJerry W. Robinson. Cincinnati: South Western Educational Pub.
Chicago-tyylinen lähdeviittausHoggatt, Jack P. Century 21 Keyboarding & Information Processing: Jack P. Hoggatt, Jon A. Shank AndJerry W. Robinson. Cincinnati: South Western Educational Pub, 2004.
MLA-viiteHoggatt, Jack P. Century 21 Keyboarding & Information Processing: Jack P. Hoggatt, Jon A. Shank AndJerry W. Robinson. Cincinnati: South Western Educational Pub, 2004.
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