APA (7th ed.) Citation

Jackson, A., & Jackson, A. (1992). Elementary grammar: Worksheets. Ellis Horwood.

Chicago Style (17th ed.) Citation

Jackson, Andy, and Audrey Jackson. Elementary Grammar: Worksheets. New York: Ellis Horwood, 1992.

MLA (9th ed.) Citation

Jackson, Andy, and Audrey Jackson. Elementary Grammar: Worksheets. Ellis Horwood, 1992.

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