Garvan, J. M. 1931. The Manobo of Mindanao. Mem. Nat. Acad. Sci. 23. 1-231. Washinton, D.C.: National Academy of Science.
@article{garvan1931, author = {Garvan, J. M.}, journal = {Mem. Nat. Acad. Sci.}, key = {Garvan (1931)}, pages = {1-231}, publisher = {Washinton, D.C.: National Academy of Science}, series = {National Academy of Science Memoirs}, title = {The Manobo of Mindanao}, volume = {23}, year = {1931} }