Singh, N. K. (2004). Encyclopedia of the world scientists (10 Volumes). APH Publishing Corporation.
Chicago Edition CitationSingh, Nagendra Kr. Encyclopedia of the World Scientists (10 Volumes). New Delhi: APH Publishing Corporation, 2004.
Cita MLASingh, Nagendra Kr. Encyclopedia of the World Scientists (10 Volumes). APH Publishing Corporation, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.