Schats, Thomas, author
Simon & Schuster Macmilan, 1997
Buku Referensi
Baliio, Tino, author
Macmillan Library reference USA, 1993
Buku Referensi
edited by John Brook
Doubleday Anchhor, 1975
Buku Teks
Cynthia Lucia, Roy Grundmann, Arthur Simon, editors
Wiley Balckwell, 2016
Buku Teks
Cynthia Lucia, Roy Grundmann and Art Simon, editors
Wiley Balckwell, 2016
Buku Teks