Library Association. Research and Development Committee, Library Association. Membership Committee, & Mallaber, K. A. (1974). Professional and non-professional duties in libraries: A descriptive list (2nd ed.). Library Association.
Chicago-viite (17. p.)Library Association. Research and Development Committee, Library Association. Membership Committee, ja Kenneth Aldridge Mallaber. Professional and Non-professional Duties in Libraries: A Descriptive List. 2nd ed. London: Library Association, 1974.
MLA-viite (8. p.)Library Association. Research and Development Committee, et al. Professional and Non-professional Duties in Libraries: A Descriptive List. 2nd ed. Library Association, 1974.
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