We asked event pros which books should be mandatory reading for event planners. From books that lay out the future of meeting planning—Maarten Vanneste’s “Meeting Architecture, A Manifesto”—to tomes that spark creative inspiration—Michael J. Gelb’s “How to Think Like Leonardo Da Vinci”—here’s a selection of the must-reads.

1. “Into the Heart of Meetings: Basic Principles of Meeting Design” by Eric de Groot and Mike van der Vijver