Cita APA (7th ed.)

King, K., & Ball, D. (1989). A holistic approach to accident and injury prevention in children's playgrounds. LSS.

Cita Chicago (17th ed.)

King, Karen, i David Ball. A Holistic Approach to Accident and Injury Prevention in Children's Playgrounds. London: LSS, 1989.

Cita MLA (8th ed.)

King, Karen, i David Ball. A Holistic Approach to Accident and Injury Prevention in Children's Playgrounds. LSS, 1989.