APA (7th ed.) Citation

Willis, H. E. (1939). The Constitution of the United States at the end of one hundred fifty years. Indiana University.

Chicago Style (17th ed.) Citation

Willis, Hugh Evander. The Constitution of the United States at the End of One Hundred Fifty Years. Bloomington, Indiana: Indiana University, 1939.

MLA (9th ed.) Citation

Willis, Hugh Evander. The Constitution of the United States at the End of One Hundred Fifty Years. Indiana University, 1939.