Abernathy, David, author
CA SAGE, 2017
Buku Teks
Hansen, Derek L., author
Morgan Kaufmann, 2011
Buku Teks
Macy, Beverly, author
McGraw-Hill, 2011
Buku Teks
Garland, John K., author
Macmillan, 1975
Buku Teks
Gaunt, Jeremy, author
Thames & Hudson, 2010
Buku Referensi