Cita APA (7a ed.)

Hollis, J. H. (1965). Differential responses of profoundly retarded children to social stimulation. [s.n.].

Cita Chicago Style (17a ed.)

Hollis, John H. Differential Responses of Profoundly Retarded Children to Social Stimulation. [S.l.]: [s.n.], 1965.

Cita MLA (9a ed.)

Hollis, John H. Differential Responses of Profoundly Retarded Children to Social Stimulation. [s.n.], 1965.