in her book Mamas Glücksbuch: Der Begleiter für gelassene Mütter (2013)
https://books.google.com/books?id=cu1Xjt_OwIoC&pg=PT103&lpg=PT103&dq=%22chuck+spezzano%22+psychologe&source=bl&ots=fQA8a5HOMQ&sig=FVf5e3VMdP3u5FS5PBeYbyK7QXA&hl=en&sa=X&ved=0CEsQ6AEwBjgUahUKEwjwko2YsvTIAhVN9GMKHbxNCyo#v=onepage&q=%22chuck%20spezzano%22%20psychologe&f=false
