Cita APA (7a ed.)

Eckersley, C. E., & Eckersley, J. M. (1961). A comprehensive english grammar: For foreign students. Longmans.

Cita Chicago Style (17a ed.)

Eckersley, C. E., y J. M. Eckersley. A Comprehensive English Grammar: For Foreign Students. London: Longmans, 1961.

Cita MLA (9a ed.)

Eckersley, C. E., y J. M. Eckersley. A Comprehensive English Grammar: For Foreign Students. Longmans, 1961.