De Guzman, L. S. (1970). A study of the present situation of children and youth in the Philippines. National Science Development Board.
芝加哥风格引文De Guzman, Leonora S. A Study of the Present Situation of Children and Youth in the Philippines. Quezon City: National Science Development Board, 1970.
MLA引文De Guzman, Leonora S. A Study of the Present Situation of Children and Youth in the Philippines. National Science Development Board, 1970.
警告：这些引文格式不一定是100％准确.