Crawford, James, author
Oxford University press, 2006
Buku Teks
Kothari, Ashish
Universities Press, 2007
Buku Teks
Murison, W. J. (William John), author
Clive Bingley , 1988
Buku Teks
Kranenburg, Roelof, 1880-, author
Tjeenk Willink & Zoon, 1951
Buku Teks
Kranenburg, Roelof, 1880-, author
H.D. Tjeenk Willink & Zoon N.V., 1949
Buku Teks