Vachek, Josef, author
Indiana University Press, 1966
Buku Teks
Victoria A. Fromkin
Blackwell Publishers, 2001
Buku Teks
Chambers, J.K., author
Wiley-Blackwell, 2009
Buku Teks
Andersen, Kenneth E., author
Cummings Publishing, 1972
Buku Teks
edited by Zhenjiang Hu, Juan de Lara
Springer-Verlag, 2012
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