Indian National Scientific Documentation Centre & Ruprail, N. (1968). Directory of Indian scientific periodicals, 1968 ([2d ed.].). Indian National Scientific Documentation Centre.
Lua i Stíl Chicago (17ú heag.)Indian National Scientific Documentation Centre agus Nirmal Ruprail. Directory of Indian Scientific Periodicals, 1968. [2d ed.]. Delhi: Indian National Scientific Documentation Centre, 1968.
Lua MLA (8ú heag.)Indian National Scientific Documentation Centre agus Nirmal Ruprail. Directory of Indian Scientific Periodicals, 1968. [2d ed.]. Indian National Scientific Documentation Centre, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.