Carney, Edward
English spelling/ Edward Carney
Routledge, 1997
 Buku Teks SO
Basch, Lester D.
Spelling self-taught: a teaching-machine book
Sterling Publishing, 1962
 Buku Teks SO
Mudd, Norma
Effective spelling : a practical guide for teachers / Norma Mudd
Hodder & Stoughton Educational , 1998
 Buku Teks
Hornsby, Beve
Alpha to omega : the A-Z of teaching, reading, writing and spelling
Willam Heinemann, 1993
 Buku Teks SO
Burt, Angela
A Guide to better spelling
Stanley Thornes, 1995
 Buku Referensi