Abcarian, Gilbert
Charles Seribner's, 1970
Buku Teks
Fowler, Robert Booth, author
Praeger, 1985
Buku Teks
Sargent, Lyman Tower, author
Wadsorth Thompson Learning, 2003
Buku Teks
Sargent, Lyman Tower, author
Brooks Cole, 1990
Buku Teks
Kymlicka, Will, author
Clarendon Press, 1990
Buku Teks