- Ancient Civilizations
- Revisiting Maler's Usumacinta: Recent Archaeological Investigations in Chiapas, Mexico
- Assertiveness: A Communication Skills Training Guide for an Unshakeable Mindset, Earning the Respect of Others and Standing Up for Yourself with Confidence While Still Building Strong Relationships
- Self-Discipline: The Unconventional Guide to Unstoppable Focus, Mental Toughness, Willpower and Building Daily Habits that Will Boost Your Self-Esteem, Beat Procrastination and Maximize Productivity
- Self-Discipline: An Essential Guide to Mental Toughness, Willpower, Unstoppable Focus, and Creating Daily Habits for Better Self-Esteem and Productivity + A Comprehensive Guide to Assertiveness