edited by Charles E. May
Ohio State University Press, 1976
Buku Teks
Munro, Alice, author
Katta, 2014
Buku Teks
edited by Benjamin B. Hoover, Donald S. Taylor
Holt, 1957
Buku Teks
Bendixen, Alfred, author
Wiley-Blackwell, 2010
Buku Teks
Holt, Rinehart and Winston, 1960
Buku Teks