Catt, Ivor
Pitman, 1973
Buku Teks SO
edited by Randall Rustin
Prentice-Hall, 1972
Buku Teks SO
Flores, Ivan
Prentice-Hall, 1969
Buku Teks SO
arranged and edited by Wolfgang Hageney
Belvedere, 1989
Buku Teks SO
Hill, Francis S.
Macmillan, 1990
Buku Teks SO