Krishan Kumar. (1992). Research methods in Library and information science. Vikas.
Dyfyniad Arddull ChicagoKrishan Kumar. Research Methods in Library and Information Science. New Delhi: Vikas, 1992.
Dyfyniad MLAKrishan Kumar. Research Methods in Library and Information Science. Vikas, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.