Olsen, L. (2013). Tracks and Signs of the Animals and Birds of Britain and Europe. Princeton University Press.
Style de citation Chicago (17e éd.)Olsen, Lars-Henrik. Tracks and Signs of the Animals and Birds of Britain and Europe. Princeton: Princeton University Press, 2013.
Style de citation MLA (8e éd.)Olsen, Lars-Henrik. Tracks and Signs of the Animals and Birds of Britain and Europe. Princeton University Press, 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.