Puthenpurakal, J. (2000). Bishop Orestes Marengo, SDB: North East India's unparalleled missionary. Vendrame Institute Publications.
Lua i Stíl Chicago (17ú heag.)Puthenpurakal, Joseph. Bishop Orestes Marengo, SDB: North East India's Unparalleled Missionary. Shillong, India: Vendrame Institute Publications, 2000.
Lua MLA (8ú heag.)Puthenpurakal, Joseph. Bishop Orestes Marengo, SDB: North East India's Unparalleled Missionary. Vendrame Institute Publications, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.