You do need the period to end the sentence as well as the ellipsis. If you look closely, the three dots to form the ellipsis have different spacing between them than the one that ends the sentence.
From
Ellipses
[FONT=Arial,Helvetica]2. When placing an ellipsis at the end of a quotation to indicate the omission of material, use four points -- a three-point ellipsis and a period. The ellipsis should follow a blank space.[/FONT]
[FONT=Arial,Helvetica]Incorrect: The First Amendment provides that "Congress shall make no law. . . abridging the freedom of speech. . ." U.S. Const. amend. I.[/FONT] [FONT=Arial,Helvetica]Correct: The First Amendment provides that "Congress shall make no law . . . abridging the freedom of speech . . . ." U.S. Const. amend. I.[/FONT]
And here: The Ellipsis
If words are left off at the
end of a sentence, and that is all that is omitted, indicate the omission with ellipsis marks (preceded and followed by a space) and then indicate the end of the sentence with a period … .
Or the Chicago Manual of Style: An ellipsis at the end of a sentence with no sentence following should be followed by a period (for a total of four dots).