APA

Seligman M., Darling R. B., . (1989). Ordinary families, special children: a systems approach to childhood disability. New York: Guilford Press.

Chicago

Seligman Milton, Darling Rosalyn Benjamin, . 1989. Ordinary families, special children: a systems approach to childhood disability. New York: Guilford Press.

Harvard

Seligman M., Darling R. B., . (1989). Ordinary families, special children: a systems approach to childhood disability. New York: Guilford Press.

MLA

Seligman Milton, Darling Rosalyn Benjamin, . Ordinary families, special children: a systems approach to childhood disability. New York: Guilford Press. 1989.