R.R. Bowker Company & Council of National Library and Information Associations (U.S.). (1989). The Bowker annual: Library and book trade almanac. R.R. Bowker.
Citace podle Chicago (17th ed.)R.R. Bowker Company a Council of National Library and Information Associations (U.S.). The Bowker Annual: Library and Book Trade Almanac. New York: R.R. Bowker, 1989.
Citace podle MLA (8th ed.)R.R. Bowker Company a Council of National Library and Information Associations (U.S.). The Bowker Annual: Library and Book Trade Almanac. R.R. Bowker, 1989.
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