Gaya APA

CHRISTENSEN, J, L., LUNDVALL, B. (2004). PRODUCT INNOVATION, INTERACTIVE LEARNING AND ECONOMIC PERFORMANCE . amsterdam: Elsevier.

Gaya MLA

CHRISTENSEN, JESPER, LINDGAARD., LUNDVALL, BENGT-ÅKE. "PRODUCT INNOVATION, INTERACTIVE LEARNING AND ECONOMIC PERFORMANCE". amsterdam: Elsevier, 2004. Text.