http://www.scrumguides.org/scrum-guide.html

http://www.agile-scrum-master-training.com/certified-scrum-master-csm-vs-professional-scrum-master-psm/

http://www.scrum-institute.org/Example_Scrum_Certification_Test_Questions.php

http://www.scrumguides.org/scrum-guide.html

PREGUNTAS:https://www.scrum.org/Assessments/Open-Assessmentshttp://www.scrum-institute.org/Example_Scrum_Certification_Test_Questions.phphttps://www.classmarker.com/online-test/start/?quiz=d49560ebb3d48c4f

EXCELENTE BLOG:http://manasbhardwaj.net/pass-professional-scrum-master-psm-certification/

RECURSOS DE LECTURA:http://www.scrumstudy.com/free-resources.asphttp://www.scrumguides.org/scrum-guide.html

PROFESSIONAL SCRUM MASTER