Harvey Karp

The Happiest Baby Guide to Great Sleep

Baby Bliss

El bebé más feliz

Das glücklichste Kleinkind der Welt

The Happiest Baby on the Block - The New Way to Calm Crying and Help Your Newborn Baby Sleep Longer (Unabridged)

The Happiest Baby on the Block: The New Way to Calm Crying and Help Your Newborn Baby Sleep Longer