Geologica Hungarica.

MLA

Gregory, J. W. “Geologica Hungarica.” Nature, vol. 125, no. 3140, Jan. 1930, pp. 8–9. EBSCOhost, https://doi.org/10.1038/125008a0.

APA

Gregory, J. W. (1930). Geologica Hungarica. Nature, 125(3140), 8–9. https://doi.org/10.1038/125008a0

Chicago

Gregory, J. W. 1930. “Geologica Hungarica.” Nature 125 (3140): 8–9. doi:10.1038/125008a0.