AYRES, F. (1989). Theory and problems differential and integral calculusin SI metric unit.-- ed.2. McGraw-hill.
Lua i Stíl Chicago (17ú heag.)AYRES, Frank. Theory and Problems Differential and Integral Calculusin SI Metric Unit.-- Ed.2. New York: McGraw-hill, 1989.
Lua MLA (9ú heag.)AYRES, Frank. Theory and Problems Differential and Integral Calculusin SI Metric Unit.-- Ed.2. McGraw-hill, 1989.
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