Cita APA (7a ed.)

Horn, M. (1989). Before it's too late: The child guidance movement in the United States, 1922-1945. Temple University Press.

Cita Chicago Style (17a ed.)

Horn, Margo. Before It's Too Late: The Child Guidance Movement in the United States, 1922-1945. Philadelphia: Temple University Press, 1989.

Cita MLA (9a ed.)

Horn, Margo. Before It's Too Late: The Child Guidance Movement in the United States, 1922-1945. Temple University Press, 1989.