Schwalbe, K. (2019). Information technology project management 9th ed. / Kathy Schwalbe. Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Schwalbe, Kathy. Information Technology Project Management 9th Ed. / Kathy Schwalbe. Cengage Learning, 2019.
Lua MLA (8ú heag.)Schwalbe, Kathy. Information Technology Project Management 9th Ed. / Kathy Schwalbe. Cengage Learning, 2019.
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