Cita APA (7a ed.)

Eckersley, C. E., & Eckersley, J. M. (1973). A comprehensive English grammar for foreign students (New imp.). Longman.

Cita Chicago Style (17a ed.)

Eckersley, C. E., y J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. New imp. London: Longman, 1973.

Cita MLA (9a ed.)

Eckersley, C. E., y J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. New imp. Longman, 1973.