This is an example of person vs. person because this is a conflict between to different people. Kino is hitting Juana because he is mad that she tried to destroy the pearl. Juana however is not fighting back.
Person vs. Society
Kino is hiding the pearl because he is being very self-conscious and greedy about not loosing the pearl even when it has brought so much bad to him and his family.
Person vs. Person
Kino and Juana go back to their house after the beating incident and see their house burning down. Fire is a part of nature which is why this is person vs. nature.
Person vs. Self
The doctor isn't helping Kino and Juana because of their ethnicity and race. He is in the house but he doesn't think people like that are worthy of his time.
We need the doctor's help.
Sorry the doctor isn't here right now....
The intruder and Kino are fighting while Juana and Coyotito are sleeping.
Kino is always thinking to himself and he sings a lot about the situation he is in.