APA (7th ed.) Zitazioa
Lewis, J. P. (2001). Project planning scheduling & control (3rd ed.). Tata McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Lewis, James P. Project Planning Scheduling & Control. 3rd ed. New Delhi: Tata McGraw-Hill, 2001.
MLA (9th ed.) Zitazioa
Lewis, James P. Project Planning Scheduling & Control. 3rd ed. Tata McGraw-Hill, 2001.
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