APA (7th ed.) Citation

Gilpin, E. (1886). The Geology of Cape Breton Island, Nova Scotia. Quarterly Journal of the Geological Society, 42(1-4), 515.

Chicago Style (17th ed.) Citation

Gilpin, E. "The Geology of Cape Breton Island, Nova Scotia." Quarterly Journal of the Geological Society 42, no. 1-4 (1886): 515.

MLA (9th ed.) Citation

Gilpin, E. "The Geology of Cape Breton Island, Nova Scotia." Quarterly Journal of the Geological Society, vol. 42, no. 1-4, 1886, p. 515.