APA (7th ed.) Citation

Barrows, D. P. (2009). The Negrito and Allied Types in the Philippines and The Ilongot or Ibilao of Luzon. Project Gutenberg.

Chicago Style (17th ed.) Citation

Barrows, David P. The Negrito and Allied Types in the Philippines and The Ilongot or Ibilao of Luzon. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Barrows, David P. The Negrito and Allied Types in the Philippines and The Ilongot or Ibilao of Luzon. Project Gutenberg, 2009.

Warning: These citations may not always be 100% accurate.