Kreuzer, James R.
Holt, Rinehart and Winston, 1964
Buku Teks
Kreuzer, James R.
Holt, Rinehart and Winston, 1966
Buku Teks
Oxford University Press , 1976
Koleksi Publik
Henshaw, Marjorie
Little, Brown, 1962
Buku Teks
Dupre, Lyn
Addison-Wesley, 1995
Buku Teks