Shaw, John. “On the Geology of the Diamond-Fields of South Africa”. Quarterly Journal of the Geological Society, vol. 28, no. 1-2, pp. 21-27, https://doi.org/10.1144/gsl.jgs.1872.028.01-02.11.
Shaw, J. (n.d.). On the Geology of the Diamond-Fields of South Africa. Quarterly Journal of the Geological Society, 28(1-2), 21-27. https://doi.org/10.1144/gsl.jgs.1872.028.01-02.11
Shaw, John. “On the Geology of the Diamond-Fields of South Africa”. Quarterly Journal of the Geological Society 28, no. 1-2 (n.d.): 21-27. https://doi.org/10.1144/gsl.jgs.1872.028.01-02.11.
1.
Shaw J. On the Geology of the Diamond-Fields of South Africa. Quarterly Journal of the Geological Society. 28(1-2):21-7.