Journal
| Title | Varyasyong Ponolohikal ng Wikang Mandaya sa Ilang Munisipalidad ng Davao Oriental Posted by Mary Ann Sandoval |
| Authors | Pasion, Raymund M.; Sandoval, Mary Ann S. |
| Publication date | 2013/12 |
| Journal | Davao Research Journal |
| Volume | IX |
| Issue | 2013 |
| Pages | 57-66 |