National Center for History in the Schools (U.S.), Center for History in the Schools, Nash, G. B., & Crabtree, C. A. (1996). National standards for history: Basic edition. National Center for History in the Schools, University of California, Los Angeles.
Citazione stile Chigago Style (17a edizione)National Center for History in the Schools (U.S.), Center for History in the Schools, Gary B. Nash, e Charlotte Antoinette Crabtree. National Standards for History: Basic Edition. Los Angeles, CA: National Center for History in the Schools, University of California, Los Angeles, 1996.
Citatione MLA (9a ed.)National Center for History in the Schools (U.S.), et al. National Standards for History: Basic Edition. National Center for History in the Schools, University of California, Los Angeles, 1996.