McLeod, Donald
Leicester The Dryad Press , 1971
Buku Teks
editor, Ramon P. Santos
Asean Committee on Culture and Information, 1995
Buku Referensi
Nugroho Dewanto
Yrama Widya, 2004
Buku Teks
French, Richard Mark, author
[, Springer], 2012
eBooks
London : Wise Publications, 1999,
Buku Teks