Arnold, T. (1991). Natural history from A to Z: A terrestrial sampler. M.K. McElderry Books ; Maxwell Macmillan Canada ; Maxwell Macmillan International.
Citazione stile Chigago Style (17a edizione)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.
Citatione MLA (8a ed.)Arnold, Tim. Natural History from A to Z: A Terrestrial Sampler. M.K. McElderry Books ; Maxwell Macmillan Canada ; Maxwell Macmillan International, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.