The readers will know that it is Panchito’s point of view because Panchito refers to himself as “I” and “me”. He reflects on only his own, or Panchito's, thoughts. All of the stories are told from Panchito's perspective, or point of view.
They know why Panchito always uses the "I", "mine" and "me" pronouns, which leaves his own thoughts and feelings very clear and clarifies to the reader that this is his point of view in history.
