Παραπομπή σε μορφή APA (7η εκδ.)

Crepon, B., Duguet, E., & Mairesse, J. (1998). Research, innovation, and productivity: An econometric analysis at the firm level. National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Crepon, Bruno, Emmnauel Duguet, και Jacques Mairesse. Research, Innovation, and Productivity: An Econometric Analysis at the Firm Level. Cambridge: National Bureau of Economic Research, 1998.

Παραπομπή σε μορφή MLA (9th εκδ.)

Crepon, Bruno, et al. Research, Innovation, and Productivity: An Econometric Analysis at the Firm Level. National Bureau of Economic Research, 1998.