American Society for Testing and Materials. (1969). Directory of testing laboratories: Commercial - institutional. American Society for Testing and Materials.
Citazione stile Chigago Style (17a edizione)American Society for Testing and Materials. Directory of Testing Laboratories: Commercial - Institutional. Philadelphia, Pa.: American Society for Testing and Materials, 1969.
Citatione MLA (8a ed.)American Society for Testing and Materials. Directory of Testing Laboratories: Commercial - Institutional. American Society for Testing and Materials, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.