APA (7th ed.) Zitazioa
Cleland, D. I. (1998). Project Management Casebook. Project Management Institute.
Chicago Style (17th ed.) Zitazioa
Cleland, David I. Project Management Casebook. Sylva, EUA: Project Management Institute, 1998.
MLA (9th ed.) Zitazioa
Cleland, David I. Project Management Casebook. Project Management Institute, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.