Wilson, Ross J., 1981-, author
Taylor & Francis Group, 2018
Buku Teks
Claeys, Gregory, author
Oxford University Press, 2017
eBooks
Lincoln, Roger J., author
Cambridge University Press, 1990
Buku Referensi
Banerjee, Anil Chandra
Macmillan, 1978
Buku Teks
Rawlison, H.G.
Frederick A Praeger, 1952
Buku Teks