APA (7th ed.) Citation

Williams, E. M., & Shuard, H. (1979). Primary mathematics today (New metric ed.). ELBS and Longman.

Chicago Style (17th ed.) Citation

Williams, Elizabeth M., and Hilary Shuard. Primary Mathematics Today. New metric ed. London: ELBS and Longman, 1979.

MLA (9th ed.) Citation

Williams, Elizabeth M., and Hilary Shuard. Primary Mathematics Today. New metric ed. ELBS and Longman, 1979.