Cita APA (7a ed.)

Dietrich, W., & Cunningham, B. (2003). Natural grace: The charm, wonder, and lessons of Pacific Northwest animals and plants. University of Washington Press.

Cita Chicago Style (17a ed.)

Dietrich, William, y Brenda Cunningham. Natural Grace: The Charm, Wonder, and Lessons of Pacific Northwest Animals and Plants. Seattle: University of Washington Press, 2003.

Cita MLA (8a ed.)

Dietrich, William, y Brenda Cunningham. Natural Grace: The Charm, Wonder, and Lessons of Pacific Northwest Animals and Plants. University of Washington Press, 2003.