Sentence case is a capitalisation rule used for most titles in APA style. In sentence case, the first letter of the title, the sub-title, and any proper nouns start with a capital letter. The rest of the title is in lowercase unless an acronym such as NHS.
Example
Invisible child: Poverty, survival & hope in an American city
Title case
Title case is generally used in references that have two titles (e.g. journal article and newspaper article references have both an article title and a journal/newspaper title). The guide will tell you when you need to use title case.
Capitalise all words, except for minor words that are three letters or fewer. The short, minor words 'of', 'the', and 'and' are kept in lower case, except where they appear at the start of the title or subtitle.
Example
The Chronicles of Narnia: The Lion, the Witch and the Wardrobe
