I went directly to the source (with apologies for botching the language)and Hans Peter was kind enough to respond:
Here is the info of the book.Brother Lawrence & Frank Laubach, Title: Practicing his presencePublisher: The SeedSowersISBN: 0-940232-01-4
_________________SI Moderator - Greg Gordon
Wow! how did you find his email. God is great!
_________________Mike Balog