Locke, John, author
Dolphin Books, 1961
Buku Teks
Eva Hudaeva, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2020
UI - Tesis (Membership)
Garan, D.G., author
Philosophical Library, 1987
Buku Teks
Locke, John, author
J.M. Dent and Sons , 1947
Buku Teks
Ingpen, Robert, author
Dragon's World, 1993
Buku Referensi