Pierce, R. C., Jr. (January 1977). "A Brief History of Logarithms". The Two-Year College Mathematics Journal. Mathematical Association of America. 8 (1): 22–26. doi:10.2307/3026878. JSTOR3026878.Pemeliharaan CS1: Banyak nama: authors list (link)
Pierce, R. C., Jr. (January 1977). "A Brief History of Logarithms". The Two-Year College Mathematics Journal. Mathematical Association of America. 8 (1): 22–26. doi:10.2307/3026878. JSTOR3026878.Pemeliharaan CS1: Banyak nama: authors list (link)