Não informado. (1973). Dimensions. U.S. Department of Commerce, National Bureau of Standards.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Dimensions. Washington: U.S. Department of Commerce, National Bureau of Standards, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Dimensions. U.S. Department of Commerce, National Bureau of Standards, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.