New Josquin Edition (NJE) 26.13 according to JRP, NJE 26.12 according to Grove Music Online.
According to Grove Music Online, the "4-v orig. [of 'Sancta trinitas, unus Deus' is] by Févin (ed. E.H. Clinkscale, Collected Works of Antoine de Févin, iii, Ottawa, 1994), 2 added vv by Arnold von Bruck; 6-v version attrib. Josquin in D-EIa s.s.; 4-v version also attrib. Craen, Festa, Morales, Mouton".