Chatterdji, Tapan Mohan
Orient Longmans, 1948
Buku Teks
Ghosh, Semanti, author
Oxford University Press, 2017
eBooks
Khalil I. Ghathwan, author
University Utara Malaysia, School of Computing, 2013
Artikel Jurnal
Ricklefs, M.C. (Merle Calvin), 1943-, author
Palgrave Macmilan, 2008
Buku Teks
Cochran, Thomas C.
McGraw-Hill, 1972
Buku Teks