Παραπομπή σε μορφή APA (7η εκδ.)

Hefti, T. (1997). Quality system model for development and maintenance of software in pharmaceutical manufacturing. Rosch-Buch.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hefti, Thomas. Quality System Model for Development and Maintenance of Software in Pharmaceutical Manufacturing. Schesslitz: Rosch-Buch, 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hefti, Thomas. Quality System Model for Development and Maintenance of Software in Pharmaceutical Manufacturing. Rosch-Buch, 1997.