Isaac Barrow, John Tillotson, Abraham Hill – The works of the learned Isaac Barrow ... Printed by J. Heptinstall, for Brabazon Aylmer, 1700 Published by DR JOHN TILLOTSON THE LORD ARCHBISHOP OF CANTERBURY 13 Mayıs 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow – The theological works of Isaac Barrow, Volume 1 The University Press, 1830 23 Haziran 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow, Thomas Smart Hughes 1831 – The Works of Dr. Isaac Barrow: With Some Account of His Life, Summary of Each Discourse, Notes, &c (1831)- Fourth VolumeA.J. Valpy. Retrieved 1 February 2012
Isaac Barrow, John Tillotson, Abraham Hill – The works of the learned Isaac Barrow ... Printed by J. Heptinstall, for Brabazon Aylmer, 1700 Published by DR JOHN TILLOTSON THE LORD ARCHBISHOP OF CANTERBURY 13 Mayıs 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow – The theological works of Isaac Barrow, Volume 1 The University Press, 1830 23 Haziran 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow, Thomas Smart Hughes 1831 – The Works of Dr. Isaac Barrow: With Some Account of His Life, Summary of Each Discourse, Notes, &c (1831)- Fourth VolumeA.J. Valpy. Retrieved 1 February 2012
O'Connor, J. J.; Robertson, E. F. "gap-system". School of Mathematics and Statistics University of St Andrews. 26 Aralık 2010 tarihinde kaynağından arşivlendi. Erişim tarihi: 1 Şubat 2012.
O'Connor, J. J.; Robertson, E. F. "gap-system". School of Mathematics and Statistics University of St Andrews. 26 Aralık 2010 tarihinde kaynağından arşivlendi. Erişim tarihi: 1 Şubat 2012.
Isaac Barrow, John Tillotson, Abraham Hill – The works of the learned Isaac Barrow ... Printed by J. Heptinstall, for Brabazon Aylmer, 1700 Published by DR JOHN TILLOTSON THE LORD ARCHBISHOP OF CANTERBURY 13 Mayıs 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow – The theological works of Isaac Barrow, Volume 1 The University Press, 1830 23 Haziran 2016 tarihinde Wayback Machine sitesinde arşivlendi. {&} Isaac Barrow, Thomas Smart Hughes 1831 – The Works of Dr. Isaac Barrow: With Some Account of His Life, Summary of Each Discourse, Notes, &c (1831)- Fourth VolumeA.J. Valpy. Retrieved 1 February 2012