Below is a short list of great books for those who want to enhance their property investment business.

The Richest Man in Babylon by George S. Clason

Rich Dad Poor Dad by Robert Kiyosaki

Building Wealth One House at a Time by John Schaub ( this is my favorite)

Set for Life by Scott Trench

Recession-Proof Real Estate Investing by J Scott

What Every Real Estate Investor Needs to Know About Cash Flow by Frank Gallinelli

Landlording on Autopilot by Mike Butler

The 4-Hour Workweek by Tim Ferris