Cita APA (7a ed.)
Birdsall, S. S., Florin, J., Targonski, R., & Hug, K. Outline of American Geography: Regional Landscapes of the United States.
Cita estilo Chicago (17a ed.)
Birdsall, Stephen S., John Florin, Rosalie Targonski, y Kathleen Hug. Outline of American Geography: Regional Landscapes of the United States.
Cita MLA (9a ed.)
Birdsall, Stephen S., et al. Outline of American Geography: Regional Landscapes of the United States.
Precaución: Estas citas no son 100% exactas.