Foreword.

MLA

Gurdon, John. “Foreword.” Geological Journal, vol. 2, no. 3, Sept. 1961, pp. i–iii. EBSCOhost, https://doi.org/10.1002/gj.3350020302.

APA

Gurdon, J. (1961). Foreword. Geological Journal, 2(3), i–iii. https://doi.org/10.1002/gj.3350020302

Chicago

Gurdon, John. 1961. “Foreword.” Geological Journal 2 (3): i–iii. doi:10.1002/gj.3350020302.