Mair, Lucy
University of London, 1969
Buku Teks
Cochrane, Glynn
Oxford University Press, 1971
Buku Teks
edited by Aaron Podolefsky, Peter J. Brown, Scott M. Lacy
McGraw-Hill, 2012
Buku Teks SO
Mair, Lucy
Macmillan, 1992
Buku Teks
Ferraro, Gary P.
Cengage Learning, 2018
Buku Teks