 The Fibonacci rhythm theory as it applies to history and the stock market by Carlo Maria Flumiani, 1975
 The Fibonacci method of trading in stocks and commodities by Alphonse De Rockeville, 1979
 The strange Fibonacci's discoveries in numerology for greater living achievement (A Library of the occult series book) by Thomas Calvert, 1978
 Leonardo Pisano (Fibonacci) : The Book of Squares by L. E. Sigler, 1987
 Jacopo da Firenze's Tractatus Algorismi and Early Italian Abbacus Culture (Science Networks. Historical Studies) by Jens Høyrup, 20071023
