Cita APA (7a ed.)

Richardson, D. H. S., & Dalby, C. (1992). Pollution monitoring with lichens. Richmond Publishing.

Cita Chicago Style (17a ed.)

Richardson, D. H. S., y C. Dalby. Pollution Monitoring with Lichens. Slough: Richmond Publishing, 1992.

Cita MLA (9a ed.)

Richardson, D. H. S., y C. Dalby. Pollution Monitoring with Lichens. Richmond Publishing, 1992.