Tokyo University of Foreign Studies, 2005
Buku Teks
Zentai, Laszlo, editor
Springer, 2012
eBooks
Jackson, Peter, author
Routledge, 1995
Buku Teks
Larson, James A., author
Prentice-Hall, 1992
Buku Teks
American Association for the Advancement of Science, 2018
Majalah, Jurnal, Buletin