15th=Fifteenth> Allerton Park Intitute (1968 : Illinois). (1969). Cooperation between types of libraries: The beginnings of a state plan for library services in Illinois. University of Illinois, Graduate School of Library Science.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)15th=Fifteenth> Allerton Park Intitute (1968 : Illinois). Cooperation Between Types of Libraries: The Beginnings of a State Plan for Library Services in Illinois. Urbana: University of Illinois, Graduate School of Library Science, 1969.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)15th=Fifteenth> Allerton Park Intitute (1968 : Illinois). Cooperation Between Types of Libraries: The Beginnings of a State Plan for Library Services in Illinois. University of Illinois, Graduate School of Library Science, 1969.
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