APA (7th ed.) Zitazioa
Grad, F. P., & Williams, R. F. (2006). State constitutions for the twenty-first century. State University of New York Press.
Chicago Style (17th ed.) Zitazioa
Grad, Frank P., eta Robert F. Williams. State Constitutions for the Twenty-first Century. Albany: State University of New York Press, 2006.
MLA (9th ed.) Zitazioa
Grad, Frank P., eta Robert F. Williams. State Constitutions for the Twenty-first Century. State University of New York Press, 2006.
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