(...) in the above mentioned book, as well as in books written by other authors such as Joe Vitale , Bob Proctor, Jack Canfield, James Arthur Ray, Napoleon Hill, Esther & Jerry Hicks, and (...) praktykowaniem technik opisanych w tej książce, zarówno jak i w książkach innych autorów, takich jak Joe Vitale , Bob Proctor, Jack Canfield, James Arthur Ray, Napoleon Hill, Esther & Jerry Hicks i (...)