Cita APA (7th ed.)

Allen, W. (1959). Living English structure (4th.). Orient Longmans.

Cita Chicago (17th ed.)

Allen, W. Living English Structure. 4th. Bombay: Orient Longmans, 1959.

Cita MLA (9th ed.)

Allen, W. Living English Structure. 4th. Orient Longmans, 1959.