Hill, G.A., author
Ginn, 1889
Buku Teks
Gibilisco, Stan, 1953-, author
McGraw-Hill, 2011
Buku Teks
Lathrop, Thomas G., author
Wadsworth, 1967
Buku Teks
Robson, B.N., author
Rigby, 1968
Buku Teks
Smart, James R., author
Brooks/Cole Publishing, 1969
Buku Teks