APA引文

Grad, F. P., & Williams, R. F. (2006). State constitutions for the twenty-first century. State University of New York Press.

芝加哥风格引文

Grad, Frank P., 与 Robert F. Williams. State Constitutions for the Twenty-first Century. Albany: State University of New York Press, 2006.

MLA引文

Grad, Frank P., 与 Robert F. Williams. State Constitutions for the Twenty-first Century. State University of New York Press, 2006.