Hubbard, L. R. (2009). The way to happiness: A common sense guide to better living ([First edition].). The Way to Happiness Foundation International.
Cita Chicago (17th ed.)Hubbard, L. Ron. The Way to Happiness: A Common Sense Guide to Better Living. [First edition]. [Glendale, California]: The Way to Happiness Foundation International, 2009.
Cita MLA (9th ed.)Hubbard, L. Ron. The Way to Happiness: A Common Sense Guide to Better Living. [First edition]. The Way to Happiness Foundation International, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.