Sutherland, R. (1987). A longitudinal study of the development of pupils' algebraic thinking in a LOGO environment. University of London, Institute of Education.
芝加哥风格引文Sutherland, Rosamund. A Longitudinal Study of the Development of Pupils' Algebraic Thinking in a LOGO Environment. [London]: University of London, Institute of Education, 1987.
MLA引文Sutherland, Rosamund. A Longitudinal Study of the Development of Pupils' Algebraic Thinking in a LOGO Environment. University of London, Institute of Education, 1987.
警告：这些引文格式不一定是100％准确.