APA (7th ed.) Citation

Eckersley, C. E. Essential English for Foreign Students. Longmans.

Chicago Style (17th ed.) Citation

Eckersley, C. E. Essential English for Foreign Students. London: Longmans.

MLA (9th ed.) Citation

Eckersley, C. E. Essential English for Foreign Students. Longmans.

Warning: These citations may not always be 100% accurate.