Croskery, P. (1977). An American crusade for wildlife, by J. B. Trefethen [Review]. Zenodo.
Cita Chicago (17th ed.)Croskery, Peter. An American Crusade for Wildlife, by J. B. Trefethen [Review]. Zenodo, 1977.
Cita MLA (9th ed.)Croskery, Peter. An American Crusade for Wildlife, by J. B. Trefethen [Review]. Zenodo, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.