Finding Milk matters: infant feeding and immune disorder as two interactive searchable e-books online:
For parents and professionals wanting help with crying babies:
Crying babies and food in the early years
Apple iTunes
https://itunes.apple.com/us/book/id1164045837
Amazon Kindle:
https://www.amazon.com/dp/B01LXR34XK
Kobo:
https://store.kobobooks.com/en-us/ebook/crying-babies-and-food