Revell, J., Phillips, D., & Sheerin, S. (1991). Signature intermediate: Workbook. [s.n].
Chicago Style (17th ed.) CitationRevell, Jane, Diane Phillips, and Susan Sheerin. Signature Intermediate: Workbook. NelSon, U.K: [s.n], 1991.
MLA (9th ed.) CitationRevell, Jane, et al. Signature Intermediate: Workbook. [s.n], 1991.
Warning: These citations may not always be 100% accurate.