Cita APA (7a ed.)

Peal, E., & Lambert, W. E. (1962). The relation of bilingualism to intelligence. [s.n.].

Cita Chicago Style (17a ed.)

Peal, Elizabeth, y Wallace E. Lambert. The Relation of Bilingualism to Intelligence. [S.l.]: [s.n.], 1962.

Cita MLA (9a ed.)

Peal, Elizabeth, y Wallace E. Lambert. The Relation of Bilingualism to Intelligence. [s.n.], 1962.