Παραπομπή σε μορφή APA (7η εκδ.)

Nijkamp, P., & Siedschlag, I. (2011). Innovation, growth and competitiveness: Dynamic regions in the knowledge-based world economy. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Nijkamp, Peter, και Iulia Siedschlag. Innovation, Growth and Competitiveness: Dynamic Regions in the Knowledge-based World Economy. New York: Springer, 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Nijkamp, Peter, και Iulia Siedschlag. Innovation, Growth and Competitiveness: Dynamic Regions in the Knowledge-based World Economy. Springer, 2011.