King, K., & Ball, D. (1989). A holistic approach to accident and injury prevention in children's playgrounds. LSS.
芝加哥风格引文King, Karen, 与 David Ball. A Holistic Approach to Accident and Injury Prevention in Children's Playgrounds. London: LSS, 1989.
MLA引文King, Karen, 与 David Ball. A Holistic Approach to Accident and Injury Prevention in Children's Playgrounds. LSS, 1989.
警告：这些引文格式不一定是100％准确.