APA (7th ed.) Citation

Geological Association of Canada, Halls, H. C., & Fahrig, W. F. (1987). Mafic dyke swarms. Geological Association of Canada.

Chicago Style (17th ed.) Citation

Geological Association of Canada, Henry C. Halls, and W. F. Fahrig. Mafic Dyke Swarms. St. John's, Nfld.: Geological Association of Canada, 1987.

MLA (9th ed.) Citation

Geological Association of Canada, et al. Mafic Dyke Swarms. Geological Association of Canada, 1987.