Start with high-confidence international marketing books, then narrow by subgenre or adjacent topics.
Global Content Marketing: How to Create Great Content, Reach More Customers, and Build a Worldwide Marketing Strategy That Works
Pam Didner
Global Marketing
Warren Keegan, Mark Green
Global Marketing Management
Warren J. Keegan
Kate Gillespie
Entry Strategies for International Markets
Franklin R. Root
ISE International Marketing
Philip Cateora, John Graham
Brand Global, Adapt Local
Katherine Melchior Ray, Nataly Kelly
