ISEas, 2007
Buku Teks
Endres, Kirsten W., author
Nias Press, 2011
Buku Teks
edited by by Van Nguyen-Marshall, Lisa B. Welch Drummond, Daniele Belanger
Springer, 2012
eBooks
Taylor, Keith Weller.
University of California Press, 1983
Buku Teks
Oxford University Press , 1959
Buku Teks