Cita APA (7th ed.)

Hull, R. (1985). The language gap: How classroom dialogue fails. Methuen.

Cita Chicago (17th ed.)

Hull, Robert. The Language Gap: How Classroom Dialogue Fails. London: Methuen, 1985.

Cita MLA (9th ed.)

Hull, Robert. The Language Gap: How Classroom Dialogue Fails. Methuen, 1985.