Here is a blockquote. Enter your test first, including the credit, and THEN highlight text (again, including the credit) and select “blockquote”. 

Whenever you hit return (enter) for  new paragraph you will get ANOTHER quote mark, so to break lines, hold down the shift key when you press return/enter – TWICE if you want a space between paragraphs.

Assign the credit lines as
H4 (Heading 4) tags and align right