edited by Havelock Ellis with an introduction by J.A. Symonds
Benn, 1948
Buku Teks
J.M. Dent & Sons , 1976
Buku Teks
Charles W. Eliot, edited
P. F. Collier & Son Corporation, 1959
Buku Referensi
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1964
UI - Skripsi (Membership)
Stanford, D
London Longmans 1954
Buku Teks