APA (7e ed.) Bronvermelding
Wolf, C. (2008). Looking backward and forward: Policy issues in the twenty-first century. Hoover Institution Press.
Chicago (17e ed.) Bronvermelding
Wolf, Charles. Looking Backward and Forward: Policy Issues in the Twenty-first Century. Stanford, Calif.: Hoover Institution Press, 2008.
MLA (9e ed.) Bronvermelding
Wolf, Charles. Looking Backward and Forward: Policy Issues in the Twenty-first Century. Hoover Institution Press, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.