Tham khảo Bằng_chứng

  1. Davis Oldham: 'Evidence' (English 101 & 102) at Shoreline Community College, shoreline.edu Accessed ngày 18 tháng 6 năm 2017
  2. American College of Forensic Examiners Institute. (2016). The Certified Criminal Investigator Body of Knowledge. Boca Raton, Florida: CRC Press. Pg113. ISBN 978-1-4987-5206-0
  3. American College of Forensic Examiners Institute. (2016). The Certified Criminal Investigator Body of Knowledge. Boca Raton, Florida: CRC Press. Pg112. ISBN 978-1-4987-5206-0