Order:
  1.  58
    The effect of overlearning on retention.W. C. F. Krueger - 1929 - Journal of Experimental Psychology 12 (1):71.
  2.  13
    Learning during directed attention.W. C. F. Krueger - 1932 - Journal of Experimental Psychology 15 (5):517.
  3.  25
    The relative difficulty of nonsense syllables.W. C. F. Krueger - 1934 - Journal of Experimental Psychology 17 (1):145.