LESTER, M. a. B., & BEASON, L. The McGraw Hill Handbok of English Grammar and Usage. Mcgraw Hill Education India Pvt Ltd.
Čikaški stil citiranja (17. izdanje)LESTER, MARK and BEASON, i LARRY BEASON. The McGraw Hill Handbok of English Grammar and Usage. Mcgraw Hill Education India Pvt Ltd.
MLA način citiranja (9. izdanje)LESTER, MARK and BEASON, i LARRY BEASON. The McGraw Hill Handbok of English Grammar and Usage. Mcgraw Hill Education India Pvt Ltd.
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