Prentice-Hall, 1949
Buku Teks
Weissenbruch , 1959
Buku Teks
Folsom, Ralph Haughwout, author
[publisher not identified], [date of publication not identified]
Buku Teks
Folsom, Ralph Haughwout, author
South-Western Publishing, 1996
Buku Teks
Folsom, Ralph Haughwout, author
[publisher not identified], [date of publication not identified]
Buku Teks