References
A.J. Broomhall, Philippine Tribes: Fields for Reaping, 1955, The Camelot Press, pg. 8, 13
Britannica, Accessed 2018, Cultural Life, https://www.britannica.com/place/Philippines/Cultural-life
J. Mallat, Les Philippines, histoire, geographie, moeurs, agriculture, industrie et commerce des Colonies espagnoles dans l'oceanie, Paris: 1846, p. 356
Junker, Laura Lee (1990). "The Organization of IntraRegional and LongDistance Trade in PreHispanic Philippine Complex Societies". Asian Perspectives. 29 (2): 167–209
Jean Mallat, Les Philippines, histoire, geographie, moeurs, agriculture, industrie et commerce des Colonies espagnoles dans l'oceanie, Paris: 1846, p. 356., p. 53, https://archive.org/details/lesphilippinesh00mallgoog
Antonio de Morga, The Project Gutenberg EBook of History of the Philippine Islands, Vols. 1 and 2, Chapter VIII.
Laura Lee Junker, "The Organization of Intra Regional and Long Distance Trade in Pre Hispanic Philippine Complex Societies”, Asian Perspectives, 1990, 29 (2): 167–209
Encyclopaedia Britannica, “Philippines”, Accessed 8 June 2018, https://www.britannica.com/place/Philippines/Sports-and-recreation#ref387368
Antonio de Morga, The Project Gutenberg EBook of History of the Philippine Islands, Vols. 1 and 2, Chapter VIII
William Henry Scott, Cracks in the Parchment Curtain, Quezon City: 1998, pp. 117-118, p. 139
A.J. Broomhall, Philippine Tribes: Fields for Reaping, 1955, The Camelot Press, pg. 12, 14-15
Fay-Cooper Cole, The Wild Tribes of Davao District, 1913, http://www.gutenberg.org/files/18273/18273-h/18273-h.htm#45
Willam Henry Scott, Barangay: Sixteenth-Century Philippine Culture and Society, 1994,
Srivijayan & Madjapahit Empire
Rebecca Ramilo Ongsotto, Reena R. Ongsotto, Philippines History Module-based Learning L’ 2002 Ed, Rex Book Store, pg 39
Encyclopaedia Britannica, Accessed 8 June 2018,
Khan Academy, Accessed 8 June 2018,
Maritime Heritage, Accessed 8 June 2018,
Facts and Details, Srivijaya Kingdom,
Rebecca Ramilo Ongsotto, Reena R. Ongsotto, Philippines History Module-based Learning L’ 2002 Ed, Rex Book Store, pg 39