Citazione Stile APA (7a Edizione)
Leopold, E. B., & Meyer, H. W. (2012). Saved in time: The fight to establish Florissant Fossil Beds National Monument, Colorado. University of New Mexico Press.
Citazione stile Chigago Style (17a edizione)
Leopold, Estella B., e Herbert W. Meyer. Saved in Time: The Fight to Establish Florissant Fossil Beds National Monument, Colorado. Albuquerque: University of New Mexico Press, 2012.
Citatione MLA (9a ed.)
Leopold, Estella B., e Herbert W. Meyer. Saved in Time: The Fight to Establish Florissant Fossil Beds National Monument, Colorado. University of New Mexico Press, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.