Schreurs, Peter (2000) Caraga Antigua, 1521-1910: the hispanization and christianization of Agusan, Surigao, and East Davao. Republic of the Philippines, National Commission for Culture and the Arts, National Historical Institute, Manila, Philippines.
Schreurs, Peter (1981) THE ANGRY DAYS OF SURIGAO, 1898-1899:(OR: THE DRAMA BEHIND F. GONZALEZ STREET, CEBU CITY). Philippine Quarterly of Culture and Society, 9 (1). pp. 17-32.