Van Opstal, D. (1984). Technical excellence in America: Incentives for investment in human capital. Washington, DC : The Center for Strategic and International Studies.
Παραπομπή σε μορφή Chicago (17η εκδ.)Van Opstal, Debra. Technical Excellence in America: Incentives for Investment in Human Capital. Washington, DC : The Center for Strategic and International Studies, 1984.
Παραπομπή σε μορφή MLA (9th εκδ.)Van Opstal, Debra. Technical Excellence in America: Incentives for Investment in Human Capital. Washington, DC : The Center for Strategic and International Studies, 1984.
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