APA (7th ed.) Citation

Ferry, B. W., Baddeley, M. S., & Hawksworth, D. L. (1973). Air pollution and lichens. University of Toronto Press.

Chicago Style (17th ed.) Citation

Ferry, B. W., M. S. Baddeley, and D. L. Hawksworth. Air Pollution and Lichens. [Toronto]: University of Toronto Press, 1973.

MLA (9th ed.) Citation

Ferry, B. W., et al. Air Pollution and Lichens. University of Toronto Press, 1973.