Langan, J. (2002). Student CD-ROM to accompany Reading and Study Skills (séptima edición.). McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Langan, John. Student CD-ROM to Accompany Reading and Study Skills. séptima edición. Boston, MA: McGraw-Hill, 2002.
MLA način citiranja (9. izdanje)Langan, John. Student CD-ROM to Accompany Reading and Study Skills. séptima edición. McGraw-Hill, 2002.
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