Keenan, Charles W., author
Harper and Row, 1966
Buku Teks
Wood, Jesse H., author
Harper & Row, 1972
Buku Teks
Campbell, Richard D., author
Harcourt, Brace & World, 1968
Buku Teks
Wood, Jesse H., author
Harper & Row , 1966
Buku Teks
by J.H. Wood ... [and others]
Harper and Row, 1963
Buku Teks