Rujukan Pelindung muka

  1. ↑ ANSI Z87.1-2003, page 11
  2. ↑ Lebih baik pakai pelindung muka - Dr Noor Hisham Harian Metro (dalam bahasa Melayu)
  3. ↑ A. Hunsicker: "Behind the Shield: Anti-Riot Operations Guide" Universal Publishers, 2011, ISBN 978-1612330358, page 166
  4. ↑ article: "Die Helm-Maskenkombination HMK" on polizeipraxis.de (german)
  5. ↑ Ashok Bhatnagar: "Lightweight Ballistic Composites: Military and Law-Enforcement Applications", Woodhead Publishing, 2018, ISBN 978-0081004067, page 133, 222
  6. ↑ Ashok Bhatnagar: "Lightweight Ballistic Composites: Military and Law-Enforcement Applications", Woodhead Publishing, 2018, ISBN 978-0081004067, page 396,397