London, H.I.
Sydney University Press, 1970
Buku Teks SO
Ria Uki Suharsi
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2003
UI - Tesis Membership
edited by John Lack and Jacqueline Templeton
The University of Melbourne, 1988
Buku Teks SO
edited by Kenneth Rivett
Melbourne University Press, 1975
Buku Teks SO
Noor Fatia Lastika Sari
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2018
UI - Tesis Membership