Fairbairn, Gavin, author
McGraw-Hill, 2012
Buku Teks
Charles E. Tutle Co.Inc, 1959,
Buku Referensi
Grant, Bruce, 1925-, author
Hollym, 1982
Buku Teks
Barnet, Sylvan, author
Bedford/St. Martin's, 2002
Buku Teks
Barnet, Sylvan, author
Bedford/St Martin's, 2014
Buku Teks