Or Is this anyone's book? Either way it looks like this should be a question.
Or that the quality of writing in the book doesn't stand out so it could have been written by: anyone.
There are a few sentences around this part of the course using words such as anyone in affirmative statements, when they are usually reserved for questions and negations. I wonder if this is a translation issue or whether the Romanian sentences are restricted to the very limited contexts where such sentences would actually make sense!