Arnold, T. (1991). Natural history from A to Z: A terrestrial sampler. M.K. McElderry Books ; Maxwell Macmillan Canada ; Maxwell Macmillan International.
Cita Chicago (17th ed.)Arnold, Tim. Natural History from A to Z: A Terrestrial Sampler. New York : Toronto : New York: M.K. McElderry Books ; Maxwell Macmillan Canada ; Maxwell Macmillan International, 1991.
Cita MLA (8th ed.)Arnold, Tim. Natural History from A to Z: A Terrestrial Sampler. M.K. McElderry Books ; Maxwell Macmillan Canada ; Maxwell Macmillan International, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.