What are some popular examples of each: comic, anime, and book, that cross over with each other?

A popular example is 'Attack on Titan,' which started as a manga (comic), was adapted into a successful anime series, and has novelizations (books). Another example is 'Watchmen' originally a comic book, adapted into a film and later an HBO series, also with novelizations. The 'Batman' comic series has many novelizations and animated adaptations, showcasing the crossover potential.