Cita APA (7th ed.)

United States. Office of Child Development & Grotberg, E. H. (1977). 200 years of children. U.S. Dept. of Health, Education, and Welfare, Office of Human Development, Office of Child Development.

Cita Chicago (17th ed.)

United States. Office of Child Development i Edith Henderson Grotberg. 200 Years of Children. [Washington]: U.S. Dept. of Health, Education, and Welfare, Office of Human Development, Office of Child Development, 1977.

Cita MLA (8th ed.)

United States. Office of Child Development i Edith Henderson Grotberg. 200 Years of Children. U.S. Dept. of Health, Education, and Welfare, Office of Human Development, Office of Child Development, 1977.