Seidenadel, Carl Wilhelm. 1909. The first grammar of the language spoken by the Bontoc Igorot, with a vocabulary and texts, mythology, folk-lore, historical episodes, songs. Chicago: Open Court.
@book{bonmannsymmetrical-seidenadel1909bontoc,
address = {Chicago},
author = {Seidenadel, Carl Wilhelm},
publisher = {Open Court},
title = {The first grammar of the language spoken by the Bontoc Igorot, with a vocabulary and texts, mythology, folk-lore, historical episodes, songs},
year = {1909}
}