David, P. T., & Pollock, R. (1957). Executives for government: Central issues of Federal personnel administration. Brookings Institution.
Παραπομπή σε μορφή Chicago (17η εκδ.)David, Paul Theodore, και Ross Pollock. Executives for Government: Central Issues of Federal Personnel Administration. Washington: Brookings Institution, 1957.
Παραπομπή σε μορφή MLA (9th εκδ.)David, Paul Theodore, και Ross Pollock. Executives for Government: Central Issues of Federal Personnel Administration. Brookings Institution, 1957.
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