Orr, Daniel
Preager , 1970
Buku Teks
Nurdin Kosasih, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2014
UI - Tesis (Membership)
Clark, Colin W., author
John Wiley & Sons, 1976
Buku Teks
edited by M.A.H. Dempster, Gautam Mitra, Georg Pflug
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Mathur, Kamlesh, author
Prentice-Hall, 1994
Buku Teks