Walker, H.F., 1994. The Machine That Changed the World. Journal of Technology Education, 5(2), pp.72–73. DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker HF. The Machine That Changed the World. Journal of Technology Education. 1994;5(2):72–3. DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker, H. F. (1994). The Machine That Changed the World. Journal of Technology Education, 5(2), 72–73. DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker HF, ‘The Machine That Changed the World’ (1994) 5 Journal of Technology Education 72 DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker, Harvey Fred. 1994. “The Machine That Changed the World”. Journal of Technology Education 5 (2): 72–73. DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker, Harvey Fred. “The Machine That Changed the World”. Journal of Technology Education 5, no. 2 (1994): 72–73. DOI: http://doi.org/10.21061/jte.v5i2.a.7

Walker, H. F.. “The Machine That Changed the World”. Journal of Technology Education, vol. 5, no. 2, 1994, pp. 72–73. DOI: http://doi.org/10.21061/jte.v5i2.a.7