Cita APA (7a ed.)

Heller, K. B., & Rugeley, T. (2007). Alone in Mexico: The Astonishing Travels of Karl Heller, 1845-1848. University of Alabama Press.

Cita Chicago Style (17a ed.)

Heller, Karl B., y Terry Rugeley. Alone in Mexico: The Astonishing Travels of Karl Heller, 1845-1848. Tuscaloosa: University of Alabama Press, 2007.

Cita MLA (8a ed.)

Heller, Karl B., y Terry Rugeley. Alone in Mexico: The Astonishing Travels of Karl Heller, 1845-1848. University of Alabama Press, 2007.