Gunter K. Stahl, Ingmar Bjorkman, Shad Morris, editors
Edward Elgar, 2012
Buku Teks
Armstrong, Michael
Crest Publishing House, 1999
Buku Teks
Buku Teks
Dessler, Gary, 1942-
Pearson, 2015
Buku Teks
Dessler, Gary, 1942-
Pearson Education, 2015
Buku Teks