http://books.google.com.br/books?id=oJzGQ9aHM3oC&printsec=frontcover&dq=10+Princ%C3%8Dpios+Da+Paternidade+Espiritual+Por+MARSHA+FAYFIELD+WALCH,MIMI+DOE&source=bl&ots=6tbcwhqBRp&sig=H6Bf7wTcqlqN79_nzyySlmOkHl8&hl=pt-BR&ei=3AFcTLDvPIH_8AbYpfzeAQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CBwQ6AEwAQ#v=onepage&q&f=false