Woeppel, M. J. (2010). Project In Less Time (1.). Productivity & Quality Pub.
Lua i Stíl Chicago (17ú heag.)Woeppel, Mark J. Project In Less Time. 1. Madras: Productivity & Quality Pub, 2010.
Lua MLA (9ú heag.)Woeppel, Mark J. Project In Less Time. 1. Productivity & Quality Pub, 2010.
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