Jurilla, Patricia May Bantug (2006) Tagalog bestsellers and the history of the book in the Philippines PhD thesis, School of Oriental and African Studies Topic Philippines Publishing Older and/or precursor texts (may not be "romance" as now defined)
Jurilla, Patricia May Bantug (2008) Tagalog Bestsellers of the Twentieth Century: A History of the Book in the Philippines Quezon City: Ateneo de Manila University Press Topic Philippines