Cita APA (7a ed.)

Barke, E. M., & Williams, D. E. P. (1938). A further study of the comparative intelligence of children in certain bilingual and monoglot schools in South Wales. [s.n.].

Cita Chicago Style (17a ed.)

Barke, Ethel M., y D. E. Parry Williams. A Further Study of the Comparative Intelligence of Children in Certain Bilingual and Monoglot Schools in South Wales. [S.l.]: [s.n.], 1938.

Cita MLA (9a ed.)

Barke, Ethel M., y D. E. Parry Williams. A Further Study of the Comparative Intelligence of Children in Certain Bilingual and Monoglot Schools in South Wales. [s.n.], 1938.