International Federation of Library Associations. General Council, Vosper, R., & Newkirk, L. I. (2017). National and international library planning: Key papers presented at the 40th session of the IFLA General Council, Washington, DC 1974. [De Gruyter].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Federation of Library Associations. General Council, Robert Vosper, و Leone I. Newkirk. National and International Library Planning: Key Papers Presented at the 40th Session of the IFLA General Council, Washington, DC 1974. [Place of publication not identified]: [De Gruyter], 2017.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Federation of Library Associations. General Council, et al. National and International Library Planning: Key Papers Presented at the 40th Session of the IFLA General Council, Washington, DC 1974. [De Gruyter], 2017.