Adams, A B. 1936. Analyses of Business Cycles. McGraw - Hill. 232p.
Calomiris, C W & Gorton, Gary. 1991. The Origin of Banking Panics. Paper in Financial Markets & Financial Crises. Edited by Hubbard, R G. The University of Chicago Press.
Dichev, Ilia & Janes, Troy. 2003. Lunar Cycle Effects In Stock Returns. Working paper. The Journal of Private Equity. 6 (4): p 8–29.
Encyclopedia Americana. 1995. Grolier. Vol 5, p 46-47 & Vol 21, p 358.
Funk, J M. 1933. The 56 Year Cycle in American Business Activity. Ottawa, IL.
Kindleberger, C P, 1996, Manias, Panics & Crashes. John Wiley & Sons. 3rd edition. 263p.
Kitchin, J M. 1933. Trade Cycles Chart. Published by The Times Annual Financial & Commercial Review. 1920, 1924, 1930. Revised chart to 1933 presented in Gold. A reprint of The Special Number of The Times. June 20, 1933. Times Publishing Co Ltd.
McMinn, David, 1986, The 56 Year Cycles & Financial Crises. 15th Conference of Economists. The Economics Society of Australia. Monash University, Melbourne. 18p. Aug 25-29.
McMinn, David, 1993. US Financial Crises & The Number 56. The Australian Technical Analyst Association Newsletter. p 21-25. September.
McMinn, David. 1994. Mob Psychology & The Number 56. The Australian Technical Analyst Association Newsletter. p 28-37. March.
McMinn, David. 1995. Financial Crises & The Number 56. Twin Palms Publishing. 124p.
McMinn, David. 1996. Financial Crises & The Number 56. Cycles. The Foundation For The Study of Cycles. p 11-17. Vol 46, No 1. Aug.
McMinn, David. 2002. Market Timing By The Number 56. Twin Palms Publishing. 134p.
McMinn, David, 2006. Market Timing by The Moon & The Sun. Twin Palms Publishing. 163p.
McMinn, David, 2011a. 9/56 Year Cycle: Californian Earthquakes. New Concepts In Global Tectonics Newsletter. No 58. p 33-44. March.
McMinn, David, 2011b. 9/56 Year Cycle: Record Earthquakes. New Concepts In Global Tectonics Newsletter. No 59. p 88-104. June.
McMinn, David, 2011c, 9/56 Year Cycle: Hurricanes. New Concepts In Global Tectonics Newsletter. No 59. p 105-111. June.
McMinn, David. 2011d. 9/56 Year Cycle: Earthquakes in Selected Countries. New Concepts in Global Tectonics Newsletter. No 60. p 9-37. Sep.
McMinn, David. 2012. 9/56 Year Cycle: World Mega Volcanic Eruptions. New Concepts in Global Tectonics Newsletter. No 64. p 7-18. Sep.
Sobel, Robert. 1965. The Big Board: A History of The New York Stock Market. Free Press.
Sobel, Robert. 1968. Panic on Wall Street: A History of America’s Financial Disasters. Macmillan.
Yuan, Kathy et al. 2006. Are Investors Moonstruck? Lunar Phases and Stock Returns. Journal of Empirical Finance, Volume 13, Issue 1, Jan. p 1-23.