Here are the citations of the information sources you have found:

Book Citations

1. book 1:
   
2. book 2:
   
3. book 3:
   

Article Citations

1. article 1:
   
2. article 2:
   
3. article 3:
   

Web Citations

1. Web site 1:
   
2. Web site 2:
   
3. Web site 3: