Παραπομπή σε μορφή APA (7η εκδ.)

Ke, B., Petroni, K. R., & Shackelford, D. A. (1999). The impact of state taxes on self-insurance. National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ke, Bin, Kathy R. Petroni, και Douglas A. Shackelford. The Impact of State Taxes on Self-insurance. Cambridge: National Bureau of Economic Research, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ke, Bin, et al. The Impact of State Taxes on Self-insurance. National Bureau of Economic Research, 1999.