Allison (1979) 
Allison, E.J. 1979. "Proto-Danaw: A Comparative Study of Maranaw, Magindanaw and Iranun". Papers in Philippine Linguistics No. 10. A-55:53-112. Pacific Linguistics, The Australian National University. 
Classification: Austronesian:Malayo-Polynesian:Philippine:Greater Central Philippine:Danao