1. Kanin Udomsukprasert. 2012. A Study of Password Setting Behavior of Working Internet Users in Thailand. M.Sc. Thesis. King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.
2. Anne Adams and Martina A. Sasse. 1999. User are not the enemy. Magazine Communication of the ACM. 42, 12 (December 1999), 40--46. http://doi.acm.org/10.1145/322796.322806
3. Rachna Dhamija and Adrian Perrig. 2000. Déjà Vu: A User Study Using Images for Authentication. In Proceedings of the 9th Conference on USENIX Security Symposium, 45--58.
4. Roger N. Shepard. 1967. Recognition Memory for Words, Sentences, and Pictures. Journal of Verbal Learning and Verbal Behavior 6, 1: 156--163.
5. Nipat Pattarasophonkul. 2014. Effects of Facial Image Displays and Password Setting Turns on Password Recall. M.Sc. Thesis. Thammasat University, Pathum Thani, Thailand.