Ekwall, E. E., & Shanker, J. L. (1993). Ekwall/Shanker reading inventory (3rd ed.). Allyn and Bacon.
芝加哥风格引文Ekwall, Eldon E., 与 James L. Shanker. Ekwall/Shanker Reading Inventory. 3rd ed. Boston: Allyn and Bacon, 1993.
MLA引文Ekwall, Eldon E., 与 James L. Shanker. Ekwall/Shanker Reading Inventory. 3rd ed. Allyn and Bacon, 1993.
警告：这些引文格式不一定是100％准确.