1. Abdulla, M.A., Ahmed, I., Assawamakin, A., Bhak, J., Brahmachari, S.K., Calacal, G.C., et al., 2009. Mapping human genetic diversity in Asia. Science, 326, 1541–1545
2. Alvarez, K., 2020. Between three empires: the Manila Observatory, 1865–1945. Paper presented at the conference on “Where Science & Empire Met: Observatories in Asia in the Late 19th to Mid-20th Centuries”, University of Philippines Diliman, 27–28 February 2020, Manila.
3. Ambrosio, D., 2010. Balatik. Etnoastronomiya: Kalangitan sa Kabihasnang Pilipino. Manila, University of the Philippines (in Tagalog).
4. Ammarell, G., 1999. Bugis Navigation. New Haven, Yale Southeast Asia Studies (Monograph 48).
5. Arenas, M., Gorostiza, A., Baquero, J.M., Campoy, E., Branco, C., Rangel-Villalobos, H., and González-Martín, A., 2020. The early peopling of the Philippines based on mtDNA. Nature, Science Report. 2020 Mar 17;10(1):4901. https://doi.org/10.1038/s41598-020-61793-7.