APA (7th ed.) Citation

United States. Bureau of the Census, Crook, K. A., & Mills, K. M. Characteristics of American children and youth, 1976.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census, Karen A. Crook, and Karen M. Mills. Characteristics of American Children and Youth, 1976.

MLA (9th ed.) Citation

United States. Bureau of the Census, et al. Characteristics of American Children and Youth, 1976.