Hulley, J. (1991). Self-access spelling: An approach to structured spelling. National Extension College.
芝加哥风格引文Hulley, Jan. Self-access Spelling: An Approach to Structured Spelling. Cambridge, [Eng.]: National Extension College, 1991.
MLA引文Hulley, Jan. Self-access Spelling: An Approach to Structured Spelling. National Extension College, 1991.
警告：这些引文格式不一定是100％准确.