por Ellis, Albert, 1913-2007 [autor] | Harper, Robert A [autor] | Ellis, Albert, 1913-2007. How to stop destroying your relationships | Diéguez Diéguez, Remedios [traductor] | Vernon, Ann [prologuista].
por Keyes, Ken [autor] | Keyes, Penny [autor] | Merino, Aurora [traductor] | Keyes, Ken. Power of unconditional love.