ALLEN ROBERT G. (2006). CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. FREE PRESS.
Lua i Stíl Chicago (17ú heag.)ALLEN ROBERT G. CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. NEW YORK: FREE PRESS, 2006.
Lua MLA (9ú heag.)ALLEN ROBERT G. CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. FREE PRESS, 2006.
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