National Association of Independent Schools. Library Committee. (1968). 4000=Four thousand> Books for secondary school libraries: A basic list. R. R. Bowker.
Chicago-viite (17. p.)National Association of Independent Schools. Library Committee. 4000=Four Thousand> Books for Secondary School Libraries: A Basic List. New York: R. R. Bowker, 1968.
MLA-viite (9. p.)National Association of Independent Schools. Library Committee. 4000=Four Thousand> Books for Secondary School Libraries: A Basic List. R. R. Bowker, 1968.
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