Mullerson, Rein
Routledge, 1997
Buku Teks
Forsythe, David P., 1941-
Cambridge University Press, 2012
Buku Teks
Artikel Jurnal
Lamchek, Jayson S.
Cambridge University Press, 2019
eBooks
Forsythe, David P., 1941-
Cambridge University Press, 2000
Buku Teks