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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)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.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.