ProQuest (Firm) & Abdullahi, I. (2009). Global library and information science: A textbook for students and educators : with contributions from Africa, Asia, Australia, New Zealand, Europe, Latin America and the Caribbean, the Middle East, and North America. K.G. Saur.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ProQuest (Firm) و Ismael Abdullahi. Global Library and Information Science: A Textbook for Students and Educators : With Contributions from Africa, Asia, Australia, New Zealand, Europe, Latin America and the Caribbean, the Middle East, and North America. Munchen: K.G. Saur, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ProQuest (Firm) و Ismael Abdullahi. Global Library and Information Science: A Textbook for Students and Educators : With Contributions from Africa, Asia, Australia, New Zealand, Europe, Latin America and the Caribbean, the Middle East, and North America. K.G. Saur, 2009.