- Libro electrónicoProject Planning and SchedulingGregory T. Haugan PhD, PMP
- Libro electrónicoEffective Work Breakdown StructuresGregory T. Haugan PhD, PMP
- Libro electrónicoThe Government Manager's Guide to the Work Breakdown StructureGregory T. Haugan PhD, PMP
- Libro electrónicoWork Breakdown Structures for Projects, Programs, and EnterprisesGregory T. Haugan PhD, PMP