APA-čujuhus (7. p.)
Keeler, H. R. Foundations of Library Services: An Introduction for Support Staff (2a edición.). Rowman and Littlefield.
Chicago-čujuhus (17. p.)
Keeler, Hali R. Foundations of Library Services: An Introduction for Support Staff. 2a edición. Lanham, EUA: Rowman and Littlefield.
MLA-čujuhus (9. p.)
Keeler, Hali R. Foundations of Library Services: An Introduction for Support Staff. 2a edición. Rowman and Littlefield.
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