Cita APA (7a ed.)

Lofgren, D. L. (1995). The Bug Creek problem and the Cretaceous-Tertiary transition at McGuire Creek, Montana. University of California Press.

Cita Chicago Style (17a ed.)

Lofgren, Donald L. The Bug Creek Problem and the Cretaceous-Tertiary Transition at McGuire Creek, Montana. Berkeley: University of California Press, 1995.

Cita MLA (8a ed.)

Lofgren, Donald L. The Bug Creek Problem and the Cretaceous-Tertiary Transition at McGuire Creek, Montana. University of California Press, 1995.