Pasta Salad with Melon

Name: Pasta Salad with Melon
Ingredients: 1 tablespoon each - lime, lemon and orange juice; 1 tablespoon white vinegar; 1 tablespoon dijon; ½ cup extra virgin olive oil; 1 pound cooled, cooked rotini; ¼ cup shredded romano; 1 ½ cups each - cantaloupe and honeydew balls; 1 red onion, sliced