Cita APA (7a ed.)

Loewen, M. A., & Titus, A. L. (2013). At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah. Indiana University Press.

Cita Chicago Style (17a ed.)

Loewen, Mark A., y Alan L. Titus. At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah. Bloomington: Indiana University Press, 2013.

Cita MLA (8a ed.)

Loewen, Mark A., y Alan L. Titus. At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah. Indiana University Press, 2013.