Cita APA (7th ed.)

Laird, C. G., & Gorrell, R. M. (1961). English as language: Backgrounds, development, usage. Harcourt.

Cita Chicago (17th ed.)

Laird, Charlton Grant, i Robert M. Gorrell. English as Language: Backgrounds, Development, Usage. New York: Harcourt, 1961.

Cita MLA (9th ed.)

Laird, Charlton Grant, i Robert M. Gorrell. English as Language: Backgrounds, Development, Usage. Harcourt, 1961.