Owen, Robert
J.M. Dent & Sons , 1949
Buku Teks
Porter, Hal, 1911-1984
Angus & Robertson, 1970
Buku Teks
Brunvand, Jan Harold
W. W. Norton & Company, 1984
Buku Teks
Noble and Noble Publishers, 1959
Buku Teks
Garcia, Maria Jesus Lerma
Springer, 2012
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