Wiking, M. (2017). The little book of lykke: Secrets of the world's happiest people.
Style de citation Chicago (17e éd.)Wiking, Meik. The Little Book of Lykke: Secrets of the World's Happiest People. 2017.
Style de citation MLA (8e éd.)Wiking, Meik. The Little Book of Lykke: Secrets of the World's Happiest People. 2017.
Attention : ces citations peuvent ne pas être correctes à 100%.