Greene, H. W. (2013). Tracks and shadows: Field biology as art. University of California Press.
Chicago-referens (17:e uppl.)Greene, Harry W. Tracks and Shadows: Field Biology as Art. Berkeley: University of California Press, 2013.
MLA-referens (9:e uppl.)Greene, Harry W. Tracks and Shadows: Field Biology as Art. University of California Press, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.