Cita APA (7a ed.)

Ryan, M. P., & Shepley, L. C. (1975). Homogeneous Relativistic Cosmologies. Princeton University Press.

Cita Chicago Style (17a ed.)

Ryan, Michael P., y Lawrence C. Shepley. Homogeneous Relativistic Cosmologies. Princeton, New Jersey: Princeton University Press, 1975.

Cita MLA (8a ed.)

Ryan, Michael P., y Lawrence C. Shepley. Homogeneous Relativistic Cosmologies. Princeton University Press, 1975.