Collison, R. L. (1968). Bibliographies, subject and national: A guide to their contents, arrangement and use (3rd ed.). C. Lockwood.
Chicago-referens (17:e uppl.)Collison, Robert Lewis. Bibliographies, Subject and National: A Guide to Their Contents, Arrangement and Use. 3rd ed. London: C. Lockwood, 1968.
MLA-referens (8:e uppl.)Collison, Robert Lewis. Bibliographies, Subject and National: A Guide to Their Contents, Arrangement and Use. 3rd ed. C. Lockwood, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.