American Institute of Chemical Engineers. Center for Chemical Process Safety. (2014). Guidelines for enabling conditions and conditional modifiers in layers of protection analysis. John Wiley and Sons, Incorporation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Institute of Chemical Engineers. Center for Chemical Process Safety. Guidelines for Enabling Conditions and Conditional Modifiers in Layers of Protection Analysis. Hoboken, New Jersey: John Wiley and Sons, Incorporation, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Institute of Chemical Engineers. Center for Chemical Process Safety. Guidelines for Enabling Conditions and Conditional Modifiers in Layers of Protection Analysis. John Wiley and Sons, Incorporation, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.