Hoyle,David. (2007). Quality Management Essentials. Elsevier.
Chicago Style aipamenaHoyle,David. Quality Management Essentials. New Delhi: Elsevier, 2007.
MLA aipamenaHoyle,David. Quality Management Essentials. Elsevier, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.