Ascher, AllenAssumpção, SĂŽniaBarberBaum, L. FrankBelanger, M.Bentley, KayBohlke, DavidBraatz, BirgitBradfield, BessBregstein, BarbaraBrenner, GailChamplin, Russell NormanDahl, RoaldDavies, Ben ParryEscott, JohnFerreira, AdirFischer, LuĂs AugustoFox, AnneG. de S. Neto, JosĂ© MariaGrĂ©pinet, VincentGuarino, ReinaldoHappy BooksHarkup, KathrynHughes, JohnLawless, Laura K.Lewis, BennyLuz, Valdemar P. daMartinez, RonMattos, Airton Pozo DeNATIONAL GEOGRAPHIC LEARNINGPastura, Angela F. PerriconePelletier, DaniellePenalva, NuriaPinkley, DianePuchta, HerbertReyRibeiro, Ana Cristina de MattosRochester, Myrna BellSaslow, JoanSRL, MoonStempleski, SusanStevenson, Robert LouisThomas Nelson BrasilThorburn, JanVĂĄrios autoresWenzel, DominiqueWilkin, JenniferWoods, Geraldine