APA ציטוט

Kennedy, P. (1993). Preparing for the twenty - first century. New York: Vintage Books.

Trích dẫn kiểu Chicago

Kennedy, Paul. Preparing for the Twenty - First Century. New York: Vintage Books, 1993.

ציטוט MLA

Kennedy, Paul. Preparing for the Twenty - First Century. New York: Vintage Books, 1993.