- Author: Barclay Barrios
- Language: Engish
- Year: 2022
- Author: David R. Hilbert
- Language: Engish
- Year: 1987
- Author: Zseano/ sean roesner
- Language: Engish
- Author: Manohar Malgonkar
- Language: Engish
- Year: 1975
- Author: Baebius Italicus, George Alexander Kennedy
- Language: Engish, Latin
- Year: 1998
- Author: Napoleon Hill
- Language: Engish
- Year: 1928
- Author: Amin Ghaziani and Matt Brim (eds)
- Language: Engish
- Year: 2019
- Author: Christopher M. Davidson
- Language: Engish
- Year: 2013
- Author: Leff M.S. Lawrence S.
- Language: Engish
- Year: 2016
- Author: Paul Appleby
- Language: Engish
- Year: 1953