APA (7th ed.) Citation

Buckle, D., & Lebovici, S. (1960). Child guidance centres. World Health Organization.

Chicago Style (17th ed.) Citation

Buckle, D., and Serge Lebovici. Child Guidance Centres. Geneva: World Health Organization, 1960.

MLA (8th ed.) Citation

Buckle, D., and Serge Lebovici. Child Guidance Centres. World Health Organization, 1960.