• “Writing Effective Use Cases” by Alistair Cockburn
• “UML for the IT Business Analyst” by Howard Podeswa
• “Software Requirements” 2nd Ed. by Karl Wiegers

The Business Analysis Essential Library from Management Concepts is a complete series on Business Analysis and the Business Analyst as a career which should not be missed:

• Professionalizing Business Analysis: Breaking the Cycle of Challenged Projects by Kathleen B. Hass
• Getting It Right: Business Requirement Analysis Tools and Techniques by Kathleen B. Hass, Don Wessels, and Kevin Brennan
• From Analyst to Leader: Elevating the Role of the Business Analyst by Kathleen B. Hass, Richa Vander Horst, Kimi Ziemski, and Lori Lindbergh
• The Business Analyst as Strategist: Trans Business Strategies into Valuable Solutions by Kathleen B. Hass
• Unearthing Business Requirements: Elicitation Tools and Techniques by Kathleen B. Hass and Rosemary Hossenlopp
• The Art and Power of Facilitation: Running Powerful Meetings by Kathleen B. Hass

My experience with textbooks is rather minimal but I have used three editions of the Whitten/Bentley text (5th, 6th and 7th) and have been very happy with it.  I have used a few other texts throughout my undergrad and graduate studies in systems analysis and feel that Whitten/Bentley is by far the best that I have used directly.

• “Systems Analysis & Design Methods” 7th Ed. by Jeffrey Whitten and Lonnie Bentley