d`Alpuget, Blanche
Aurora Press, 1980
Buku Teks SO
Freiman, Marcelle
Island, 1951
Buku Teks SO
Williams, Duncan
Delta Book , 1971
Buku Teks SO
Devaux, Bernard
Barron's Educational Series, 2000
Buku Referensi
Parkman, Francis
The New American Library, 1961
Buku Teks SO