Weston, Christine, author
Charles Scribner's Sons, 1946
Buku Teks
by Donald J. Wilcox ... [et al.]
DAAD, 2007
Buku Teks
Shi, Yingzhao, author
Foreign languages Press, 2007
Buku Teks
Wood, Frank
Pitman Pub., 1992
Buku Teks
Breyer, Donald E., author
McGraw-Hill , 1999
Buku Teks