Tuleja, T. (1997). Usable Pasts. Utah State University, University Libraries.
Čikaški stil citiranja (17. izdanje)Tuleja, Tad. Usable Pasts. Utah State University, University Libraries, 1997.
MLA način citiranja (9. izdanje)Tuleja, Tad. Usable Pasts. Utah State University, University Libraries, 1997.
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