AYRES, F. (1989). Theory and problems differential and integral calculusin SI metric unit.-- ed.2. McGraw-hill.

AYRES, Frank. Theory and Problems Differential and Integral Calculusin SI Metric Unit.-- Ed.2. New York: McGraw-hill, 1989.

AYRES, Frank. Theory and Problems Differential and Integral Calculusin SI Metric Unit.-- Ed.2. McGraw-hill, 1989.