Gaya APA
Hubbard, L, R. (2007).
The way to happiness : a common sense guide to better living .
America:
Happiness Foundat nternational.
Gaya MLA
Hubbard, L., Ron.
"The way to happiness : a common sense guide to better living".
America:
Happiness Foundat nternational,
2007.
BUKU TEKS.