Karim, W. B. (1981). Ma'Betisek concepts of living things. Athlone Press.
Lua i Stíl Chicago (17ú heag.)Karim, Wazir-Jahan Begum. Ma'Betisek Concepts of Living Things. New Jersey: Athlone Press, 1981.
Lua MLA (9ú heag.)Karim, Wazir-Jahan Begum. Ma'Betisek Concepts of Living Things. Athlone Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.