Three sides of a heart

By Natalie C. Parker, Renée Ahdieh, Rae Carson, Brandy Colbert, Katie Cotugno, Lamar Giles, Tessa Gratton, Bethany Hagen, Justina Ireland, Alaya Dawn Johnson, E. K. Johnston, Julie Murphy, Garth Nix, Unknown Author, Sabaa Tahir, Brenna Yovanoff