Draper, R. J. (1976). Points from letters: Punched feature cards.
Citação norma ChicagoDraper, R J. Points From Letters: Punched Feature Cards. 1976.
MLA CitationDraper, R J. Points From Letters: Punched Feature Cards. 1976.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.