Schaff, Philip. "Document Vi: The Coptic Church Order." Oldest Church Manual Called the Teaching of the Twelve Apostles. Second Edition, Revised and Enlarged. New York: Funk & Wagnalls, 1886, 249-287.
Schaff introduces material published in 1848, The Apostolical Constitutions, or Canons of the Apostles in Coptic. This work, in seven books, "is derived from the same sources as the Apostolical Constitutions, but is probably older" (Schaff 1886, 249). Schaff reproduces an English version of book one (Schaff 1886, 250-257). The material, furnished without comment, shows a similarity to the Two Ways material of the Didache.
Schaff continues with a reprint of a Greek and English version of the Apostolical Constitutions, which he considers "an enlargement of the Didache, adapted to the state of the Eastern Church in the first half of the fourth century" (Schaff 1886, 259). In Schaff's reprint of book seven, he makes note of passages which come from the Didache (Schaff 1886, 259-287).
Schaff's book concludes with an English and Greek version of an autobiographical sketch of Bryennios, then some additional bibliographical references to the Didache.