Mabey 1986, p. 6. Mabey, Richard (1986). Gilbert White: A biography of the author of The Natural History of Selborne. London: Century Hutchinson. OCLC906495663.
Mabey 1986, p. 173. Mabey, Richard (1986). Gilbert White: A biography of the author of The Natural History of Selborne. London: Century Hutchinson. OCLC906495663.