Segre, Cesare
Muton, 1973
Buku Teks
edited by Charles Wells Moulton
Gloucester, 1959
Buku Referensi
Eki Kusumadewi, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)
edited and introduced by Mary Eagleton
Longman, 1991
Buku Teks
Home, Henry, author
Liberty Fund, INC., 2005
Buku Teks