Bernice Narayanan
Bernice Narayanan, 2010
Buku Teks SO
Moncrieff, A.R. Hope
Gramercy, 1995
Buku Referensi
Kuxnetsov, Amatoly
Moscow Foreign Languages Publishing House 1959
Buku Teks
Berthelot, Joseph A.
Twayne Publishers, 1967
Buku Teks SO
White, Patrick, 1912-1990
Penguin Books, 1986
Buku Teks SO