SHROCK, Cheryl R. a HEATHER, Steve. Beginning AutoCAD 2020: exercise workbook. South Norwalk, CT: Industrial Press, 2019. ISBN 9780831195151. Dostupné také z: https://proxy.k.utb.cz/login?url=https://app.knovel.com/hotlink/toc/id:kpBACADE11/beginning-autocad-2020?kpromoter=marc.