524881 Hershey, J. (201). The eureka method: How to think like an inventor. New York : McGraw-Hill.
Chicago-viite (17. p.)524881 Hershey, John. The Eureka Method: How to Think like an Inventor. New York : McGraw-Hill, 201.
MLA-viite (9. p.)524881 Hershey, John. The Eureka Method: How to Think like an Inventor. New York : McGraw-Hill, 201.
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