Hulley, J. (1991). Self-access spelling: An approach to structured spelling. National Extension College.
Lua i Stíl Chicago (17ú heag.)Hulley, Jan. Self-access Spelling: An Approach to Structured Spelling. Cambridge, [Eng.]: National Extension College, 1991.
Lua MLA (9ú heag.)Hulley, Jan. Self-access Spelling: An Approach to Structured Spelling. National Extension College, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.