APA (7th ed.) Citation

(1981). The teaching of English as an international language: A practical guide. William Collins Sons.

Chicago Style (17th ed.) Citation

The Teaching of English as an International Language: A Practical Guide. London: William Collins Sons, 1981.

MLA (8th ed.) Citation

The Teaching of English as an International Language: A Practical Guide. William Collins Sons, 1981.

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