Donaldson, Wayne
Houghton Miffiln, 1969
Buku Teks
Young, Clarence W., author
Harper & Brothers, 1956
Buku Teks
Denniston, Katherine J., author
Wm. C. Brown, 1993
Buku Teks
Murray, Sharon Smith, author
Elsevier Sanders, 2014
Buku Teks
Nelson, Gideon E., author
John Wiley & Sons, 1984
Buku Teks