edited by David Dyzenhaus and Thomas Poole
Cambridge University Press, 2012
Buku Teks SO
550, 1947
Buku Teks
Latumahina, Freddy
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2004
UI - Skripsi Membership
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
Buku Referensi
Carritt, E.F.
Clarendon Press, 1935
Buku Teks SO