Gerry Bailey & Felicia Law 
World Money [PDF ebook] 

Money flows around the world as countries buy and sell from each other. But this money isn’t the same from country to country. It looks different and it has a different name and value. So how do we know what money really is? And can we trust it? If we travel abroad, we will certainly need some foreign money. So, understanding the ‘ins and outs’ of world money is essential.