Style de citation APA (7e éd.)

Williams, R. L. (2021). Frederick Watts and the Founding of Penn State. The Pennsylvania State University Press.

Style de citation Chicago (17e éd.)

Williams, Roger L. Frederick Watts and the Founding of Penn State. University Park, Pennsylvania: The Pennsylvania State University Press, 2021.

Style de citation MLA (8e éd.)

Williams, Roger L. Frederick Watts and the Founding of Penn State. The Pennsylvania State University Press, 2021.