I found these resources invaluable as I wrote “Dogs Bark and People Die”, Book 1 of the Jackson Wade and Dog Series.

• Strunk and White’s The Elements of Style
• Steven King’s On Writing: A Memoir of the Craft
• Lynne Truss’s Eats, Shoots & Leaves: The Zero Tolerance Approach to Punctuation 
• Eric L. Haney’s Inside Delta Force
• Mark Bowden’s Black Hawk Down
• Den Koontz’s Watchers
• James Rollins’s The Kill Switch
• Jack London’s The Call of the Wild and White Fang
• Robert Crais’s Suspect
• Dalton Fury’s Tier One Wild
• Matthieu Aikins’s, Article in Haper’s Magazine, The Master of Spin Boldak: Undercover with Afghanistan’s drug-trafficking border police
• Andrew Cockburn’s Kill Chain: The Rise of the High-Tech Assassins
• Mark Mazzetti’s The Way of the Knife: The CIA, a Secret Army, and a War at the Ends of the Earth