Murray, Neil
Cambridge University Press, 2015
eBooks
Akwasi Asabere-Ameyaw
Sense, 2012
eBooks
Hao Xiaoming; Sunanda K. Datta-Ray
Marshall Cavendish, 2006
Buku Teks
edited by John Sears and Pete Sorensen
Routledge Falmer, 2000
Buku Teks
Weinberg, Meyer
Prentice-Hall, 1959
Buku Teks