Hadsall, A. S., Cariño, G. A. F., Lambio, I. A. F., Cajano, M. A. O., Larona, A. R., & Lit, I. L., Jr. (2011). Taxonomic and ecological studies of vascular plants at entrances of selected caves in Polillo Island, Quezon, Philiipines. Transactions of the National Academy of Science and Technology.

Hadsall, Annalee S., Grace Angelique F. Cariño, Ivy Amor F. Lambio, Mary Ann O. Cajano, Ariel R. Larona, and Ireneo L. Lit, Jr. "Taxonomic and Ecological Studies of Vascular Plants at Entrances of Selected Caves in Polillo Island, Quezon, Philiipines." Transactions of the National Academy of Science and Technology 2011.

Hadsall, Annalee S., et al. "Taxonomic and Ecological Studies of Vascular Plants at Entrances of Selected Caves in Polillo Island, Quezon, Philiipines." Transactions of the National Academy of Science and Technology, 2011.