Judd, John W. “On the Structure and Age of Arthur’s Seat, Edinburgh”. Quarterly Journal of the Geological Society, vol. 31, no. 1-4, pp. 131-48, https://doi.org/10.1144/gsl.jgs.1875.031.01-04.11.
Judd, J. W. (n.d.). On the Structure and Age of Arthur’s Seat, Edinburgh. Quarterly Journal of the Geological Society, 31(1-4), 131-148. https://doi.org/10.1144/gsl.jgs.1875.031.01-04.11
Judd, John W. “On the Structure and Age of Arthur’s Seat, Edinburgh”. Quarterly Journal of the Geological Society 31, no. 1-4 (n.d.): 131-48. https://doi.org/10.1144/gsl.jgs.1875.031.01-04.11.
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Judd JW. On the Structure and Age of Arthur’s Seat, Edinburgh. Quarterly Journal of the Geological Society. 31(1-4):131-48.