David, Ananthakrishnan, . (2004). General & Applied Entomology. new delhi: Tata McGraw Hill Publishing Co.
David, Ananthakrishnan, . 2004. General & Applied Entomology. new delhi: Tata McGraw Hill Publishing Co.
David, Ananthakrishnan, . General & Applied Entomology. new delhi: Tata McGraw Hill Publishing Co. 2004.
