Titles in which the first letter of each word is capitalized:
The Great Gatsby
The Magician’s Assistant
Titles that include . . .
-- coordinating conjunctions (and, or, for, nor, or, but, so)
-- articles (a, an, the)
-- prepositions (in, on, as, for, from, of, with, etc.) :
Alice’s Adventures in Wonderland
North and South
Lincoln in the Bardo
A Wrinkle in Time
Books with subtitles:
What If?: Serious Scientific Answers to Absurd Hypothetical Questions
Charlotte Bronte: A Fiery Heart