Johnstone, R. W. (2015). Protecting transportation: Implementing security policies and programs. Boston: Butterworth-Heinemann.
استشهاد بنمط شيكاغوJohnstone, R. William. Protecting Transportation: Implementing Security Policies and Programs. Boston: Butterworth-Heinemann, 2015.
MLA استشهادJohnstone, R. William. Protecting Transportation: Implementing Security Policies and Programs. Boston: Butterworth-Heinemann, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.