If you want an easy reference for Girls' Lacrosse penalty administration, take a look at this reference card. You may download and print the pdf files. Laminate the two printed cards making a front/back. They should fit into the pocket of your uniform pants or shirt.
I suggest that you NOT refer to the cards during the game, but they are a good, quick reference for before the game, at halftime, or after the game.
Also, as a part of this file there is a sample improvements card. Every Umpire should identify three parts of his or her game to improve.