I am sure there is a short cut but the way I do it is:
Open another browser window and cut and paste from one to the other that way you can use several posts in the same reply. Be sure and copy the portion with the member's name, you are quoting each time you you cut and paste; that way when you click on it, it will refer to the original post you are referencing.
Another way is to use [ ] around the word "quote" at the beginning and use "/quote" at the end it will look like this:
hope that helps,
Brad