Eckersley, C. E. (1960). A comprehensive English grammar for foreign students. Longmans.
Citazione stile Chigago Style (17a edizione)Eckersley, Charles Ewart. A Comprehensive English Grammar for Foreign Students. London: Longmans, 1960.
Citatione MLA (9a ed.)Eckersley, Charles Ewart. A Comprehensive English Grammar for Foreign Students. Longmans, 1960.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.