Doolittle, J. H. (1991). Dr. DooRiddles: Associative reasoning activities. Pacific Grove, CA: Midwest Publications Critical Thinking Press & Software.
Chicago Style CitationDoolittle, John H. Dr. DooRiddles: Associative Reasoning Activities. Pacific Grove, CA: Midwest Publications Critical Thinking Press & Software, 1991.
MLA CitationDoolittle, John H. Dr. DooRiddles: Associative Reasoning Activities. Pacific Grove, CA: Midwest Publications Critical Thinking Press & Software, 1991.
Warning: These citations may not always be 100% accurate.