DECA - How do I study for the marketing career cluster exam?

Sample exam: http://www.deca.org/wp-content/uploads/2014/08/HS_Marketing_Cluster_Sample_Exam.pdf

If any of you have reached very close to a perfect score on this exam at area, state, or international levels, please share your experiences of how you studied for it.

What I currently am studying are the Quizlet vocabulary of the book “Marketing Essentials” from Glencoe and the following books:

https://www.amazon.com/Marketing-Essentials-Glencoe-McGraw-Hill/dp/0078612578/ref=sr_1_20?ie=UTF8&qid=1468897195&sr=8-20&keywords=marketing+essentials
https://www.amazon.com/Principles-Marketing-Global-KOTLER/dp/1292092483/ref=mt_paperback?_encoding=UTF8&me=

All suggestions will truly help.