If the title displayed on the title page of your source contains a serial comma, include the comma when you reproduce the title. For example, the title displayed on the title page below contains a serial comma:

The comma is thus included when the title is reproduced:

After the Wreck, I Picked Myself Up, Spread My Wings, and Flew Away

But here is an example of a title page displaying a title with no serial comma:

So no comma appears when the title is reproduced:

The Lion, the Witch and the Wardrobe