Richards,O W & Davies <br/><br/>
Imm's General Textbook of Entomology Vol.1 :  Structure, Physiology and Development 

 - 10th edition., 
 - New York:  Chapman and Hall,  1977. 
 - 418p.; 
<br/><br/><label>ISBN: </label>041215210x 
<br/><br/><label>Dewey Class. No.: </label>595.7 RIC/I