London. University. School of Librarianship and Archives. (1957). Guide to unpublished research materials: Lectures delivered at a vacation course of the University of London School of Librarianship and Archives in April 1956. Library Association.
Citace podle Chicago (17th ed.)London. University. School of Librarianship and Archives. Guide to Unpublished Research Materials: Lectures Delivered at a Vacation Course of the University of London School of Librarianship and Archives in April 1956. London: Library Association, 1957.
Citace podle MLA (9th ed.)London. University. School of Librarianship and Archives. Guide to Unpublished Research Materials: Lectures Delivered at a Vacation Course of the University of London School of Librarianship and Archives in April 1956. Library Association, 1957.