Cardarelli 2003 Cardarelli, François (2003). „Chapter 2: The International system of Units”(PDF). Encydopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer-Verlag London Limited. стр. 5. ISBN978-1-85233-682-0. Приступљено 26. 1. 2017. „Data from Giacomo, P., Du platine à la lumière [From platinum to light], Bull. Bur. Nat. Metrologie, 102 (1995) 5–14.”Пронађени су сувишни параметри: |at= и |pages= (помоћ)
Taylor and Thompson (2008a), Appendix 1, p. 70. Taylor, B.N. and Thompson, A. (Eds.). (2008a). The International System of Units (SI)Архивирано на сајту Wayback Machine (3. јун 2016). United States version of the English text of the eighth edition (2006) of the International Bureau of Weights and Measures publication Le Système International d’ Unités (SI) (Special Publication 330). Gaithersburg, MD: National Institute of Standards and Technology. Приступљено 18 August 2008.
Taylor and Thompson (2008a), Appendix 1, p. 77. Taylor, B.N. and Thompson, A. (Eds.). (2008a). The International System of Units (SI)Архивирано на сајту Wayback Machine (3. јун 2016). United States version of the English text of the eighth edition (2006) of the International Bureau of Weights and Measures publication Le Système International d’ Unités (SI) (Special Publication 330). Gaithersburg, MD: National Institute of Standards and Technology. Приступљено 18 August 2008.
Astin & Karo 1959. Astin, A. V. & Karo, H. Arnold, (1959), Refinement of values for the yard and the pound, Washington DC: National Bureau of Standards, republished on National Geodetic Survey web site and the Federal Register (Doc. 59-5442, Filed, 30 June 1959, 8:45 a.m.)
Taylor and Thompson (2008a), Appendix 1, p. 70. Taylor, B.N. and Thompson, A. (Eds.). (2008a). The International System of Units (SI)Архивирано на сајту Wayback Machine (3. јун 2016). United States version of the English text of the eighth edition (2006) of the International Bureau of Weights and Measures publication Le Système International d’ Unités (SI) (Special Publication 330). Gaithersburg, MD: National Institute of Standards and Technology. Приступљено 18 August 2008.
Taylor and Thompson (2008a), Appendix 1, p. 77. Taylor, B.N. and Thompson, A. (Eds.). (2008a). The International System of Units (SI)Архивирано на сајту Wayback Machine (3. јун 2016). United States version of the English text of the eighth edition (2006) of the International Bureau of Weights and Measures publication Le Système International d’ Unités (SI) (Special Publication 330). Gaithersburg, MD: National Institute of Standards and Technology. Приступљено 18 August 2008.