ALLRED, R. A., BAIRD, L. O., & READ, E. A. (1981). Keys to spelling mastery. The Economy Co.
芝加哥风格引文ALLRED, Ruel A., Louise O. BAIRD, 与 Edwin A. READ. Keys to Spelling Mastery. Oklahoma: The Economy Co, 1981.
MLA引文ALLRED, Ruel A., et al. Keys to Spelling Mastery. The Economy Co, 1981.
警告：这些引文格式不一定是100％准确.