APA stands for the American Psychological Association and its format style is used in fields of education, psychology and sociology. There are a set of regulations related to how an APA format is produced. It is not an easy job and you must be sincere enough in executing it yourself. In case, you are taking help from a thesis writing team, you should speak beforehand about the formatting they will use. There are other formats like MLA and Chicago and Harvard and one should not be confused with the other.
Hopefully, these points will help you in befriending the APA format and you do not feel too afraid of it anymore.