http://www.quintcareers.com/interview_question_database/interview_questions_1.html
http://www.jobinterviewquestions.org/marketing-jobs-questions/marketing-interview-questions/
http://www.curata.com/blog/content-marketing-interview-questions/
http://newgradlife.blogspot.fr/2010/06/15-toughest-interview-questions-and.html
http://www.huffingtonpost.co.uk/2013/06/18/google-interview-questions_n_3458986.html