Roberts, S.C.
Longman, Green, 1965
Buku Teks SO
Boswell, James, 1740-1795
Modern Library, 1971
Buku Teks SO
Boswell, James, 1740-1795
Dell Publishing, 1963
Buku Teks SO
Clifford, James L. [James Lowry], 1901-1978
University of Minnesota Press, 1970
Buku Referensi
Greene, Donald Johnson
Kennikat Press, 1960
Buku Teks SO