Powers, Robert H., author
CRC Press, Taylor & Francis Group, 2016
Buku Teks
edited by Malcolm Coulthard and Alison Johnson
RoutledgeI, 2013
Buku Teks
Day, Robert W., author
McGraw-Hill, 2011
Buku Teks
edited by Ian Tebbett
Ellis Horwood, 1992
Buku Teks
Singh, Karanprakash, author
Lambert Academic Publishing , 2011
Buku Teks