Παραπομπή σε μορφή APA (7η εκδ.)

Gruber, J., & Cullen, J. B. (1996). Spousal labor supply as insurance: Does unemployment insurance crowd outthe added worker effect? National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gruber, J., και Julie Berry Cullen. Spousal Labor Supply as Insurance: Does Unemployment Insurance Crowd Outthe Added Worker Effect? Cambridge: National Bureau of Economic Research, 1996.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gruber, J., και Julie Berry Cullen. Spousal Labor Supply as Insurance: Does Unemployment Insurance Crowd Outthe Added Worker Effect? National Bureau of Economic Research, 1996.