APA (7th ed.) Citation

Heaton, J. B., & Stocks, J. P. Graded English test papers (New impr.). Longman.

Chicago Style (17th ed.) Citation

Heaton, John B., and J. P. Stocks. Graded English Test Papers. New impr. London: Longman.

MLA (9th ed.) Citation

Heaton, John B., and J. P. Stocks. Graded English Test Papers. New impr. Longman.