Chua, J. J. H., & Chaudhry, A. S. (2008). Call centre concepts in libraries: With emphasis on National Library Board, Singapore.
استشهاد بنمط شيكاغوChua, Jeanne Jia Hui., و Abdus Sattar Chaudhry. Call Centre Concepts in Libraries: With Emphasis On National Library Board, Singapore. 2008.
MLA استشهادChua, Jeanne Jia Hui., و Abdus Sattar Chaudhry. Call Centre Concepts in Libraries: With Emphasis On National Library Board, Singapore. 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.