The APA recommended heading style consists of five possible formatting arrangements, listed below. This image is an example of how to format level headings in APA. They are formatted as follows: centered, bold and title case: flush left, bold and title case. Indicate the authors or sources thereof in a list of references at the end of your article. This guide is based on the APA Handbook 7th ed. who has been published. The following sections provide you with information and examples that will help you cite the sources you encounter during your research. General style guidelines.