APA (7th ed.) Citation

Bell, A. W., Shiu, C. M., & Horton, B. (1981). Evaluating attainment in process aspects of mathematics. Shell Centre for Math. Education.

Chicago Style (17th ed.) Citation

Bell, Alan W., Christine M. Shiu, and B. Horton. Evaluating Attainment in Process Aspects of Mathematics. Nottingham: Shell Centre for Math. Education, 1981.

MLA (9th ed.) Citation

Bell, Alan W., et al. Evaluating Attainment in Process Aspects of Mathematics. Shell Centre for Math. Education, 1981.