APA
Oxford Dictionary of National Biography, . (2004). Leach, Bernard Howell. : Oxford University Press.
Chicago
Oxford Dictionary of National Biography, . 2004. Leach, Bernard Howell. : Oxford University Press.
Harvard
Oxford Dictionary of National Biography, . (2004). Leach, Bernard Howell. : Oxford University Press.
MLA
Oxford Dictionary of National Biography, . Leach, Bernard Howell. : Oxford University Press. 2004.
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