Harrison, Molly
George Allen and Unwin, 1953
Buku Teks
Ziman, John, author
Cambridge University Press, 1994
Buku Teks
Roberts, Penfield
Harper & Row , 1947
Buku Teks
Reid, Jasper
Springer, 2012
eBooks
J.P. Singh, Madeline Carr and Renée Marlin-Bennett, editors
Routledge, Taylor & Francis Group, 2019
Buku Teks