Wied, M., Witte, S. S., Gallagher, M. V., & Orr, W. J. (2008). The North American journals of Prince Maximilian of Wied. Norman, Oklahoma: University of Oklahoma Press.

Wied, Maximilian, Stephen S. Witte, Marsha V. Gallagher, and William J. Orr. The North American Journals of Prince Maximilian of Wied. Norman, Oklahoma: University of Oklahoma Press, 2008.

Wied, Maximilian, Stephen S. Witte, Marsha V. Gallagher, and William J. Orr. The North American Journals of Prince Maximilian of Wied. Norman, Oklahoma: University of Oklahoma Press, 2008.