Não informado. (1948). Books in Print: An index to the publishers trade list annual. R.R. Bowker Company.
Citace podle Chicago (17th ed.)Não informado. Books in Print: An Index to the Publishers Trade List Annual. New York: R.R. Bowker Company, 1948.
Citace podle MLA (8th ed.)Não informado. Books in Print: An Index to the Publishers Trade List Annual. R.R. Bowker Company, 1948.
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