HIRA D.S. (1990). PROJECT MANAGEMENT WITH PERT AND CPM. S. K. KATARIA & SONS.
Lua i Stíl Chicago (17ú heag.)HIRA D.S. PROJECT MANAGEMENT WITH PERT AND CPM. LUDHIANA: S. K. KATARIA & SONS, 1990.
Lua MLA (9ú heag.)HIRA D.S. PROJECT MANAGEMENT WITH PERT AND CPM. S. K. KATARIA & SONS, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.