check reference

hello.

I d like to know the best to to know the right name of refer. which occur when i take paragraph from book and o found later the refernence is not present in google scholar 

I am not really sure what you are asking.  You copied a paragraph from a book, but don’t know the reference for the book?  What do you know?  The library of Congress should have any published book listed, as a free resource and can be connected to directly thru the online search option in Endnote.