Citazione Stile APA (7a Edizione)
National Academy of Sciences (U.S.), National Academy of Engineering, Institute of Medicine (U.S.), National Research Council (U.S.), & ebrary, Inc. (1997). Preparing for the 21st century: The education imperative. National Academy of Sciences.
Citazione stile Chigago Style (17a edizione)
National Academy of Sciences (U.S.), National Academy of Engineering, Institute of Medicine (U.S.), National Research Council (U.S.), e Inc ebrary. Preparing for the 21st Century: The Education Imperative. [Washington, D.C.]: National Academy of Sciences, 1997.
Citatione MLA (9a ed.)
National Academy of Sciences (U.S.), et al. Preparing for the 21st Century: The Education Imperative. National Academy of Sciences, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.