public String toString(){
		String returnedString = "";
		returnedString+=chapter+" "+start+" "+end+"\n";
		if(subChapters != null){
			for(int i = 0;i < subChapters.size();i++){
				returnedString+="\t"+subChapters.get(i).getChapterName()+" "+subChapters.get(i).getStart()+" "+subChapters.get(i).getEnd()+"\n";
			}
		}
		return returnedString;
	}