Gaya APA

Kough, J., F., I, D, R. (1955). Identifying children with special needs--vol.I-- . Illinois: Illinois: Science Research Associates; 1955.

Gaya MLA

Kough, Jack., F., I., DeHaan,, Robert. "Identifying children with special needs--vol.I--". Illinois: Illinois: Science Research Associates; 1955, 1955. Text.