Παραπομπή σε μορφή APA (7η εκδ.)

OKUN, A. M. (1971). Brokings Papers On Economic Activity Arthur M. Okun And George L. Perry. The Brookings Institution.

Παραπομπή σε μορφή Chicago (17η εκδ.)

OKUN, Arthur M. Brokings Papers On Economic Activity Arthur M. Okun And George L. Perry. The Brookings Institution, 1971.

Παραπομπή σε μορφή MLA (8th εκδ.)

OKUN, Arthur M. Brokings Papers On Economic Activity Arthur M. Okun And George L. Perry. The Brookings Institution, 1971.