Roger H. Clark and Michael Pause. Precedents in Architecture. New York: Van Nostrand Reinhold, 1985. diagram, p172. — 1996 edition available at Amazon.com

Gerald Cobb. The Old Churches of London. London: B.T. Batsford, 1943. NA5470.A1C65 1943. exterior painting from the street, plateXXXII. [sic]

Eduard F. Sekler. Wren and His Place in European Architecture. London: Faber and Faber, 1956. NA997.W8S4. spire sketch, f38, p103. plan drawing, fig b, p83.

Kevin Matthews. The Great Buildings Collection on CD-ROM. Artifice, 2001. ISBN 0-9667098-4-5.— Available at Amazon.com