A. Halim Sahelan and  Mohd Halid Abu and  Jamaluddin Hashim and  Zulisman Maksom and  Mohd Afif Md Nasir,  A Survey on E-Guide to Educational Tour Planning in Environmental Science among Standard Six Primary School Students the Ministry of Education Malaysia.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2015, vol. 106(10). 3513 - 3516
    [viewed 14 July 2020]. Available from: https://publications.waset.org/pdf/10002745.