Encyclopaedia Britannica 11th ed. (1911), hakusana ”Phrynichus”. Encyclopaedia Britannica Company, Cambridge, Englanti.
ox.ac.uk
apgrd.ox.ac.uk
Phrynichus' TantalusArchive of Performances of Greek & Roman Drama. Viitattu 6.4.2020.
stoa.org
FrynikhosSuda On Line: Byzantine Lexicography. The Stoa Consortium. (muinaiskreikaksi)(englanniksi)
tufts.edu
perseus.tufts.edu
Smith, William: ”Phrynichus (2)”, Dictionary of Greek and Roman Biography and Mythology. Boston: Little, Brown and Company, 1849–1867. Teoksen verkkoversio. (englanniksi)