Samuel Rutherford (1848). “Letters of ... Samuel Rutherford, whith biogr. notices of his correspondents, by J. Anderson, and a sketch of his life, &c., by A.A. Bonar”, p.543
"Coptic Patriarch Calls 21 Beheaded Christians 'Martyrs for the Faith;' Pope Francis Says 'Their Blood Confesses Christ'" by Stoyan Zaimov, www.christianpost.com. February 16, 2015.