1. Experimental designs;Cochran,1957
2. Methods and procedures in the study of learning;Hilgard,1951
3. Characteristic differences between recall and recognition;Hollingworth;Amer. J. Psychol.,1913
4. Information content in recognition and recall;Davis;J. exp. Psychol.,1961
5. Recognition and recall;MacDougall;J. Phil., Psychol., and sci. Methods,1904