Lillich, Richard B., author
Syracuse University Press, 1965
Buku Teks
edited by Elizabeth Marting and Albert Newgardsen
International Management Association, 1957
Buku Teks
Levin, Lennart, author
Almqvist och Wiksell, 1972
Buku Teks
Sukonthapan, Pisawat, author
Faculty of law Thammaset University, 1985
Buku Teks
Cairncross, A.K., author
Cambridge University Press, 1953
Buku Teks