Hefti, T. (1997). Quality system model for development and maintenance of software in pharmaceutical manufacturing. Rosch-Buch.
Čikaški stil citiranja (17. izdanje)Hefti, Thomas. Quality System Model for Development and Maintenance of Software in Pharmaceutical Manufacturing. Schesslitz: Rosch-Buch, 1997.
MLA način citiranja (8. izdanje)Hefti, Thomas. Quality System Model for Development and Maintenance of Software in Pharmaceutical Manufacturing. Rosch-Buch, 1997.
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