Santos, H. H., Damaso, C., & Bulaong, G. F. (1966). Philippine political parties, 1900-1965: A selected annotated bibliography of printed materials with a historical introduction. Institute of Library Science, University of the Philippines Diliman.

Santos, Herminia H., Consuelo Damaso, and Grace F. Bulaong. Philippine Political Parties, 1900-1965: A Selected Annotated Bibliography of Printed Materials with a Historical Introduction. Quezon City: Institute of Library Science, University of the Philippines Diliman, 1966.

Santos, Herminia H., et al. Philippine Political Parties, 1900-1965: A Selected Annotated Bibliography of Printed Materials with a Historical Introduction. Institute of Library Science, University of the Philippines Diliman, 1966.