Farrell, Edmund James ... [et al.]
Scott, Foresman, 1976
Buku Teks
Jason W Neyers; Richard Bromaugh; Stephen G A Pitel
Hart Pub., 2009
Buku Teks
Bear, Mark F., author
Wolters Kluwer, 2016
Buku Teks
Leat, Mike, author
Butterworth-Heinemann, 2007
Buku Teks
edited by Simon Bell, Ingrid Sarlov Herlin, Richard Stiles
Routledge, 2012
Buku Teks