APA (7th ed.) Citation

Galenus & Kiefer, J. S. (1964). Galen's Institutio logica. Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Galenus and John Spangler Kiefer. Galen's Institutio Logica. Baltimore: Johns Hopkins Press, 1964.

MLA (9th ed.) Citation

Galenus and John Spangler Kiefer. Galen's Institutio Logica. Johns Hopkins Press, 1964.