Horine, G. M. (2013). Project Management (3rd.). Pearson.
Lua i Stíl Chicago (17ú heag.)Horine, Gregory M. Project Management. 3rd. NEw Delhi: Pearson, 2013.
Lua MLA (9ú heag.)Horine, Gregory M. Project Management. 3rd. Pearson, 2013.
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