APA (7th ed.) Citation

Eckersley, C. E., & Eckersley, J. M. (1960). A comprehensive english grammar for foreign students. Longman.

Chicago Style (17th ed.) Citation

Eckersley, C. E., and J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. Essex: Longman, 1960.

MLA (9th ed.) Citation

Eckersley, C. E., and J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. Longman, 1960.