Hubbard, L. R. (2007). The Problam of work ; scientology applied to the workday world. New Era.
Lua i Stíl Chicago (17ú heag.)Hubbard, L. Ron. The Problam of Work ; Scientology Applied to the Workday World. [s.l]: New Era, 2007.
Lua MLA (9ú heag.)Hubbard, L. Ron. The Problam of Work ; Scientology Applied to the Workday World. New Era, 2007.
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