Avalon, Arhur
Dover Publications, 1974
Buku Teks
Lawrence, D.H., author
Middlesex: Penguinbooks, 1955
Buku Teks
Namioka, Lensey
Tuttle, 1976
Buku Teks
Suhud Adiyanto, author
Universitas Indonesia, 2003
UI - Skripsi (Membership)
Maulia Alfiyanih, autthor
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2012
UI - Skripsi (Open)