APA

National Conference of Social Work (72a. : 1945 : Estados Unidos), .Proceedings of the National Conference of Social Work: selected papers. New York: Columbia University Press.

Chicago

National Conference of Social Work (72a. : 1945 : Estados Unidos), .Proceedings of the National Conference of Social Work: selected papers. New York: Columbia University Press.

Harvard

National Conference of Social Work (72a. : 1945 : Estados Unidos), .Proceedings of the National Conference of Social Work: selected papers. New York: Columbia University Press.

MLA

National Conference of Social Work (72a. : 1945 : Estados Unidos), .New York: Columbia University Press. .