Cita APA (7a ed.)

Seth, G., & Guthrie, D. (1935). Speech in childhood: Its development and disorders. Oxford University Press.

Cita Chicago Style (17a ed.)

Seth, George, y Douglas Guthrie. Speech in Childhood: Its Development and Disorders. London: Oxford University Press, 1935.

Cita MLA (9a ed.)

Seth, George, y Douglas Guthrie. Speech in Childhood: Its Development and Disorders. Oxford University Press, 1935.