The Hello Atlas
by Ben Handicott, Kenard Pak
The fun of this book is that you can connect to the free app to listen to the different languages represented in the book. The book includes simple greetings in over 100 languages.
This goes WAY past the common English, Spanish, French etc.
It even includes on of my favorites, Samoan!
The book is divided by geographical region and then shows people from those areas going about their day, including general greetings.