More reading on "Projecting Credibility and Confidence":

• Leading Out Loud: Inspiring Change Through Authentic Communication, by Terry Pearce
• Power Talk: Using Language to Build Authority and Influence, by Sarah McGinty

More reading on "Business Presentation Skills":

• The Articulate Executive: Look, Act, and Sound Like a Leader, by Granville Toogood
• Say It In Six: How to Say Exactly What you Mean in Six Minutes or Less, by Ron Hoff

More reading on "Collaborative Communication in the Workplace":

• Working Relationships: The Simple Truth about Getting Along with Friends and Foes at Work, by Bob Wall
• Crucial Conversations: Tools for Talking When the Stakes are High, by Kerry Patterson
• Difficult Conversations: How to Discuss What Matters Most, by Douglas Stone
• Getting It Done: How To Lead When You're Not In Charge, by Roger Fisher

More reading on gender differences in communication:

• Women Don't Ask: Negotiation and the Gender Divide, by Linda Babcock
• Talking From Nine to Five: Women and Men in the Workplace, by Deborah Tannen

Other books of interest:

• Mind Wide Open: Your Brain and the Neuroscience of Everyday Life, by Steven Johnson
• The Tipping Point: How Little Things Make a Big Difference, by Malcolm Gladwell
• Selling the Invisible: A Field Guide to Modern Marketing, by Harry Beckwith