APA (7th ed.) Citation

United States. Children's Bureau. (1940). Social statistics, supplement number 4, June 1940, to The child, monthly news summary, volume 4, number 12. [s.n.].

Chicago Style (17th ed.) Citation

United States. Children's Bureau. Social Statistics, Supplement Number 4, June 1940, to The Child, Monthly News Summary, Volume 4, Number 12. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. Children's Bureau. Social Statistics, Supplement Number 4, June 1940, to The Child, Monthly News Summary, Volume 4, Number 12. [s.n.], 1940.