Cita APA (7a ed.)

Eckersley, C., & Eckersley, J. (1978). A Comprensive English Grammar: For Foreing Students. Longman.

Cita Chicago Style (17a ed.)

Eckersley, C.E, y J.M Eckersley. A Comprensive English Grammar: For Foreing Students. London: Longman, 1978.

Cita MLA (9a ed.)

Eckersley, C.E, y J.M Eckersley. A Comprensive English Grammar: For Foreing Students. Longman, 1978.