Cita APA (7a ed.)

Ryan, J. K. (1973). Heirs and Ancestors. Catholic University of America Press.

Cita Chicago Style (17a ed.)

Ryan, John K. Heirs and Ancestors. Washington: Catholic University of America Press, 1973.

Cita MLA (8a ed.)

Ryan, John K. Heirs and Ancestors. Catholic University of America Press, 1973.