All my Chinese and Japanese books have the spine text going vertically down. Some have English text mixed in though, which is (horizontally) downwards. I can't

All my Chinese and Japanese books have the spine text going vertically down. Some have English text mixed in though, which is (horizontally) downwards. I can't imagine a book with French text mixed in (horizontally) upwards with the Chinese (vertically) downwards text would look very natural.