Collison, R. L. (1964). Encyclopaedias: their history throughout the ages: A bibliographical guide with extensive historical notes to the general encyclopaedias issued throughout the world from 350 B.C. to the present day (1. publ.). Hafner.
Chicago-Zitierstil (17. Ausg.)Collison, Robert L. Encyclopaedias: Their History Throughout the Ages: A Bibliographical Guide with Extensive Historical Notes to the General Encyclopaedias Issued Throughout the World from 350 B.C. to the Present Day. 1. publ. New York [u.a.]: Hafner, 1964.
MLA-Zitierstil (9. Ausg.)Collison, Robert L. Encyclopaedias: Their History Throughout the Ages: A Bibliographical Guide with Extensive Historical Notes to the General Encyclopaedias Issued Throughout the World from 350 B.C. to the Present Day. 1. publ. Hafner, 1964.