Jackson, Andrew R.W., author
Longman, 1996
Buku Teks
editors Shosuke Susuki, Richard J. Borden, Luc Hens
VUB-Press, 1991
Buku Teks
Harold
Princeton University Press, 1965
Buku Teks
Brady, Emily, editor
Springer, 2012
eBooks
Last, John M., 1926-, author
McGraw-Hill, 1997
Buku Teks