Agnew, R. P. (1960). Differential equations (2d ed.). McGraw-Hill.
Dyfyniad Arddull ChicagoAgnew, Ralph Palmer. Differential Equations. 2d ed. New York: McGraw-Hill, 1960.
Dyfyniad MLAAgnew, Ralph Palmer. Differential Equations. 2d ed. McGraw-Hill, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.