Ames, A.C.; Bamford, E. An Appraisal of the "Vacutainer" System for Blood Collection. Annals of Clinical Biochemistry: An International Journal of Biochemistry and Laboratory Medicine. 1975, 12 (1–6): 151–55. PMID 15637911. doi:10.1177/000456327501200136.
Ames, A.C.; Bamford, E. An Appraisal of the "Vacutainer" System for Blood Collection. Annals of Clinical Biochemistry: An International Journal of Biochemistry and Laboratory Medicine. 1975, 12 (1–6): 151–55. PMID 15637911. doi:10.1177/000456327501200136.