APA (7th ed.) Citation

Wells, T. (1961). Three vertebrates: A practical guide (2nd ed.). Heinemann Educational Books Ltd.

Chicago Style (17th ed.) Citation

Wells, T.A.G. Three Vertebrates: A Practical Guide. 2nd ed. London: Heinemann Educational Books Ltd, 1961.

MLA (8th ed.) Citation

Wells, T.A.G. Three Vertebrates: A Practical Guide. 2nd ed. Heinemann Educational Books Ltd, 1961.