Hisaaki Wake, Keijiro Suga, and Yuki Masami, editors
Lexington Books, 2018
Buku Teks
Buckley, Roger, author
Cambridge University Press, 1990
Buku Teks
Taeuber, Irene B., author
Princeton University Press, 1958
Buku Teks
International Society for Educational Information, 1989
Buku Teks
[date of publication not identified]
Buku Teks