Rivlin, A. M. (1971). Systematic thinking for social action. Brookings Institution.
Dyfyniad Arddull ChicagoRivlin, Alice M. Systematic Thinking for Social Action. Washington: Brookings Institution, 1971.
Dyfyniad MLARivlin, Alice M. Systematic Thinking for Social Action. Brookings Institution, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.