APA
Hill N. S. W. C., . (1977). Success through a positive mental attitude. New York: Published by Pocket Books.
Chicago
Hill Napoleone Stone W Clement, . 1977. Success through a positive mental attitude. New York: Published by Pocket Books.
Harvard
Hill N. S. W. C., . (1977). Success through a positive mental attitude. New York: Published by Pocket Books.
MLA
Hill Napoleone Stone W Clement, . Success through a positive mental attitude. New York: Published by Pocket Books. 1977.
