Ryan, J. M. (2017). Validating preventive food safety and quality controls: An organizational approach to system design and implementation. Academic Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ryan, John M. Validating Preventive Food Safety and Quality Controls: An Organizational Approach to System Design and Implementation. London: Academic Press, 2017.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ryan, John M. Validating Preventive Food Safety and Quality Controls: An Organizational Approach to System Design and Implementation. Academic Press, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.