Παραπομπή σε μορφή APA (7η εκδ.)

Ullberg, E. (2012). Trade in Ideas: Performance and Behavioral Properties of Markets in Patents. Springer New York.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ullberg, Eskil. Trade in Ideas: Performance and Behavioral Properties of Markets in Patents. New York, NY: Springer New York, 2012.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ullberg, Eskil. Trade in Ideas: Performance and Behavioral Properties of Markets in Patents. Springer New York, 2012.