Verora, L. (1981). Unreached peoples '81: Reaching the Muslim Filipinos (2nd ed.). World Vision Philippines.
Citazione stile Chigago Style (17a edizione)Verora, L.P. Unreached Peoples '81: Reaching the Muslim Filipinos. 2nd ed. Quezon City: World Vision Philippines, 1981.
Citatione MLA (9a ed.)Verora, L.P. Unreached Peoples '81: Reaching the Muslim Filipinos. 2nd ed. World Vision Philippines, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.