Hubbard, L. R. (2007). The Way to Happinessa Common Sense Guide to Better Living. The Way to Happiness Foundation.
Chicago-viite (17. p.)Hubbard, L. Ron. The Way to Happinessa Common Sense Guide to Better Living. The Way to Happiness Foundation, 2007.
MLA-viite (8. p.)Hubbard, L. Ron. The Way to Happinessa Common Sense Guide to Better Living. The Way to Happiness Foundation, 2007.
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