NETWORKS, INFLUNCE, and DIFFUSION KADUSHIN’S UNDERPINNINGS http://books.google.ca/books?id=xpZgCyamTu0C&printsec=frontcover&dq=Kadushin+under standing+social+networks&hl=en&sa=X&ei=z5CoT_upL4GCgwfZ0bW4AQ&ved=0CDwQ6AEwAA#v=on epage&q=Kadushin%20understanding%20social%20networks&f= false