Collison, R. L. (1966). 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 (2d ed.). Hafner Pub. Co.
Cita Chicago Style (17a ed.)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. 2d ed. New York: Hafner Pub. Co, 1966.
Cita MLA (9a ed.)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. 2d ed. Hafner Pub. Co, 1966.
