HARPHAM, Bruce. Project managers at work. [Berkeley, CA] : Apress, [2018]. ©2018. 1 online zdroj (xvi, 316 stran). Available on Internet: <http://search.ebscohost.com/login.aspx?direct=true&db=nlebk&AN=1584322&lang=cs&site=eds-live&ebv=EB&ppid=pp_C1> ISBN 978-1-4842-2668-1.