อ้างอิง ของ หลอดทดลอง

  1. ↑ MiniScience.com catalog: Test Tube, accessed March 27, 2009
  2. ↑ Thomas Scott (transl., 1996), Concise Encyclopedia: Biology.
  3. ↑ M. Jeremy Ashcraft, General Manager, Lake Charles Manufacturing (2007).
  4. ↑ TheFreeDictionary > blue top tube Citing: McGraw-Hill Concise Dictionary of Modern Medicine. 2002 by The McGraw-Hill Companies, Inc.