National Bureau of Standards: A Fluorescence Standard Reference Material: Quinine Sulfate Dihydrate - NBS Special Publication 260-64, 1980 January

National Bureau of Standards: A Fluorescence Standard Reference Material: Quinine Sulfate Dihydrate - NBS Special Publication 260-64, 1980 January, Box: 3, Folder: 6. Papers of Thomas J. Porro, 2005-080. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/75042 Accessed May 10, 2026.