Johnstone, A. H. “The Development of Chemistry Teaching: A Changing Response to Changing Demand”. Journal of Chemical Education, vol. 70, no. 9, 1993, p. 701, https://doi.org/10.1021/ed070p701.
Johnstone, A. H. (1993). The development of chemistry teaching: A changing response to changing demand. Journal of Chemical Education, 70(9), 701. https://doi.org/10.1021/ed070p701
Johnstone, A. H. “The Development of Chemistry Teaching: A Changing Response to Changing Demand”. Journal of Chemical Education 70, no. 9 (1993): 701. https://doi.org/10.1021/ed070p701.
Johnstone AH. The development of chemistry teaching: A changing response to changing demand. Journal of Chemical Education. 1993;70(9):701.