Rennison, Nick
Routledge, 2005
Buku Teks SO
editors, John H. McGlynn and E.U. Kratz ; introduction by Muhammad Haji Salleh
LONTAR Foundation, 1990
Buku Teks SO
edited by Ronald Baughman
Gale Reserach , 1986
Buku Referensi
Meridian Bokks, 1969
Buku Teks SO
Holt Rinehart & Winston, 1972
Buku Teks SO