Trilling, Lionel, author
Holt, Rinehart and Winston, 1967
Buku Teks
program consultants, Beverly Ann Chin ... [et al.]
Glencoe McGraw-Hill, 2000
Buku Teks
Tannsjo, Torbjorn, author
Edinburgh University Press, 2010
Buku Teks
Macmillan, 1971
Buku Teks
Park, Michael Alan, author
Mayfield , 1998
Buku Teks