Lakshmi Narayan Sharma. (1985). Shikshan samagri nirman aur prayog. Kendriya Hindi Sansthan.
Dyfyniad Arddull ChicagoLakshmi Narayan Sharma. Shikshan Samagri Nirman Aur Prayog. Agra: Kendriya Hindi Sansthan, 1985.
Dyfyniad MLALakshmi Narayan Sharma. Shikshan Samagri Nirman Aur Prayog. Kendriya Hindi Sansthan, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.