Cita APA (7a ed.)

United States of America. Department of the Interior. Geological Survey. (1993). Seasonal land cover regions. Geological Survey.

Cita Chicago Style (17a ed.)

United States of America. Department of the Interior. Geological Survey. Seasonal Land Cover Regions. Virginia: Geological Survey, 1993.

Cita MLA (9a ed.)

United States of America. Department of the Interior. Geological Survey. Seasonal Land Cover Regions. Geological Survey, 1993.