Ayres,Frank. (1952). Theory and problems of differential equations. McGraw-Hill.
Dyfyniad Arddull ChicagoAyres,Frank. Theory and Problems of Differential Equations. New york: McGraw-Hill, 1952.
Dyfyniad MLAAyres,Frank. Theory and Problems of Differential Equations. McGraw-Hill, 1952.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.