FELPS, R. (1992). ILLUSTRATED UNIX SYSTEM. -.
Chicago Style (17th ed.) CitationFELPS, ROBERT. ILLUSTRATED UNIX SYSTEM. -: -, 1992.
MLA (9th ed.) CitationFELPS, ROBERT. ILLUSTRATED UNIX SYSTEM. -, 1992.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.