Does anyone have any reference or source for PMP Sample Exams ?

Stephane, in general i do agree with you about the narrow.minded aspect (thank you for that "punch" by the way ... ;) ) but espacially in this case i am a bit sensitive, cause i have experienced a lot PMP aspirants who trained with such kind of stuff and who are just missguided about how the questions in the real exam are asked.
Sometimes exam takers, who failed the first try, are wondered about the fact that there are NOT such kind of questions/answers in the exam cause the expected them based on the (mostly free) prep material they have used.

PMP aspirants should have a very clear understanding about the question types and about how to answer them.

However, i also did a lot of the PM Challenge questions and i did enjoy them. They are fun stuff and you could learn a lot by doing them.
But htey are not proper tool for exam prep, that is all i wanna say.

Have a nice day.

Your source of reference is PMBOK and I had personal tried out pmprep cast and is good. You can check here more about pm-prepcast https://www.project-management-prepcast.com

Rami, are you using a curriculum? Are there chapter questions and pre / post course questions? How have you fared on those?

hi Rami,
as suggested in previous answers you can find a lot of tests in internet which simulate exam question, be careful with the free ones. is not warranted the answers are correct or there are aligned with PMBOK 5 ed.i can suggest to you someones but...in Italian. concerning books i can suggest Project Management workbook 11 ed. by Kerzner and Frank Saladis