Cita APA (7th 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 (17th ed.)
Dietrich, William, i Brenda Cunningham. Natural Grace: The Charm, Wonder, and Lessons of Pacific Northwest Animals and Plants. Seattle, Washington ; London, England: University of Washington Press, 2003.
Cita MLA (9th ed.)
Dietrich, William, i Brenda Cunningham. Natural Grace: The Charm, Wonder, and Lessons of Pacific Northwest Animals and Plants. University of Washington Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.