APA (7th ed.) Citation

Floyd, P. A., Exley, C. S., & Styles, M. T. (1993). Igneous rocks of south-west England. Chapman & Hall.

Chicago Style (17th ed.) Citation

Floyd, P. A., C. S. Exley, and M. T. Styles. Igneous Rocks of South-west England. London ; New York: Chapman & Hall, 1993.

MLA (9th ed.) Citation

Floyd, P. A., et al. Igneous Rocks of South-west England. Chapman & Hall, 1993.