Não informado. (1987). AEI economist. American Enterprise Institute for Public Policy Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. AEI Economist. Washington: American Enterprise Institute for Public Policy Research, 1987.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. AEI Economist. American Enterprise Institute for Public Policy Research, 1987.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.