Hardman, L. S., & Albrecht, J. (1997). Interacting with clients and customers: A foot in the door. Melbourne: Addison Wesley Longman Australia.
استشهاد بنمط شيكاغوHardman, Lee Sharon, و Jillian Albrecht. Interacting With Clients and Customers: A Foot in the Door. Melbourne: Addison Wesley Longman Australia, 1997.
MLA استشهادHardman, Lee Sharon, و Jillian Albrecht. Interacting With Clients and Customers: A Foot in the Door. Melbourne: Addison Wesley Longman Australia, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.