Soberano, Ros (1980). The Dialects of Marinduque Tagalog. Pacific Linguistics, Series B, No. 69. Canberra: The Australian National University. doi:10.15144/PL-B69. hdl:1885/144521. ISBN9780858832169.
Thomas, Megan C. (2007). "K is for De-Kolonization: Anti-Colonial Nationalism and Orthographic Reform". Comparative Studies in Society and History. 49 (4): 938–967. doi:10.1017/S0010417507000813. S2CID144161531.
Lewis, M. P.; Simons, G. F.; Fennig, C. D. (2014). "Tagalog". Ethnologue: Languages of the World. Archived from the original on December 12, 2020. Retrieved July 30, 2015.
Soberano, Ros (1980). The Dialects of Marinduque Tagalog. Pacific Linguistics, Series B, No. 69. Canberra: The Australian National University. doi:10.15144/PL-B69. hdl:1885/144521. ISBN9780858832169.
Espiritu, Clemencia (April 29, 2015). "Filipino Language in the Curriculum". National Commission for Culture and the Arts. Archived from the original on August 21, 2018. Retrieved August 21, 2018.
"billón". Diccionario de la lengua española (in Spanish) (23rd electronic ed.). Real Academia Española and ASALE. 2019. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
"trillón". Diccionario de la lengua española (in Spanish) (23rd electronic ed.). Real Academia Española and ASALE. 2019. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
rae.es
"billón". Diccionario panhispánico de dudas (in Spanish). Real Academia Española. 2005. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
"coma". Diccionario panhispánico de dudas (in Spanish). Real Academia Española. 2005. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
Thomas, Megan C. (2007). "K is for De-Kolonization: Anti-Colonial Nationalism and Orthographic Reform". Comparative Studies in Society and History. 49 (4): 938–967. doi:10.1017/S0010417507000813. S2CID144161531.
Lewis, M. P.; Simons, G. F.; Fennig, C. D. (2014). "Tagalog". Ethnologue: Languages of the World. Archived from the original on December 12, 2020. Retrieved July 30, 2015.
Espiritu, Clemencia (April 29, 2015). "Filipino Language in the Curriculum". National Commission for Culture and the Arts. Archived from the original on August 21, 2018. Retrieved August 21, 2018.
"billón". Diccionario de la lengua española (in Spanish) (23rd electronic ed.). Real Academia Española and ASALE. 2019. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
"billón". Diccionario panhispánico de dudas (in Spanish). Real Academia Española. 2005. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
"trillón". Diccionario de la lengua española (in Spanish) (23rd electronic ed.). Real Academia Española and ASALE. 2019. Archived from the original on April 6, 2020. Retrieved April 6, 2020.
"coma". Diccionario panhispánico de dudas (in Spanish). Real Academia Española. 2005. Archived from the original on April 6, 2020. Retrieved April 6, 2020.