Richardson, N. K., & Nina K. Richardson. Type with one hand. Cincinnati: South-Western Educational Pub.
Čikaški stil citiranjaRichardson, Nina K., i Nina K. Richardson. Type With One Hand. Cincinnati: South-Western Educational Pub.
MLA način citiranjaRichardson, Nina K., i Nina K. Richardson. Type With One Hand. Cincinnati: South-Western Educational Pub.
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