Orton, R. M. (1965). Catalog of reprint in series (20th ed.). New York: The Scarecrow Press.
Παραπομπή Chicago StyleOrton, Robert M. Catalog of Reprint in Series. 20th ed. New York: The Scarecrow Press, 1965.
Παραπομπή MLAOrton, Robert M. Catalog of Reprint in Series. 20th ed. New York: The Scarecrow Press, 1965.
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