APA (7th ed.) Citation

Etherton,A.R.B. (1966). Mastering Modern English: A Certificate Course / A.R.B.Etherton. Longman.

Chicago Style (17th ed.) Citation

Etherton,A.R.B. Mastering Modern English: A Certificate Course / A.R.B.Etherton. Longman, 1966.

MLA (8th ed.) Citation

Etherton,A.R.B. Mastering Modern English: A Certificate Course / A.R.B.Etherton. Longman, 1966.

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