APA Style

Soars, L., Soars, L. (2015). New Headway : Elementary Workbook with key (4th Edition). New York: Oxford Universiy Press.

MLA Style

Soars, Liz-p., Soars, Liz. "New Headway : Elementary Workbook with key". 4th Edition New York: Oxford Universiy Press, 2015. Text.