APA (7th ed.) Citation

Williams, E. M., & Shuard, H. (1989). Primary mathematics today (3η έκδ.). Longman.

Chicago Style (17th ed.) Citation

Williams, Elizabeth M., and Hilary Shuard. Primary Mathematics Today. 3η έκδ. Harlow: Longman, 1989.

MLA (8th ed.) Citation

Williams, Elizabeth M., and Hilary Shuard. Primary Mathematics Today. 3η έκδ. Longman, 1989.

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