Mastering Portrait Photography
Tony Northrup's DSLR Book: How to Create Stunning Digital Photography
Gregory Heisler: 50 Portraits: Stories and Techniques from a Photographer's Photographer
Photographing Women: Posing, Lighting, and Shooting Techniques for Portrait and Fashion Photography
Terence Donovan: Portraits
Dramatic Portrait: The Art of Crafting Light and Shadow
Portrait Photography: From Snapshots to Great Shots
Portraits
Portraitist: Portraits and Photography Techniques
Light and Shadow: Dynamic Lighting Design for Studio Portrait Photography
Portrait Photography: Art and Techniques
Annie Leibovitz: Portraits 2005-2016
Complete Portrait Manual: 300+ Tips and Techniques for Shooting Perfect Photos of People (Popular Photography)
Portrait Photography: From Snapshots to Great Shots
Photographing Shadow and Light: Inside the Dramatic Lighting Techniques and Creative Vision of Portrait Photographer Joey L.
Photographing Men: Posing, Lighting, and Shooting Techniques for Portrait and Fashion Photography
Direction and Quality of Light : Your Key to Better Portrait Photography Anywhere
The Photographer's Guide to Posing: Techniques to Flatter Everyone