Friedmann, Wolfgang, 1907-1972
Little, Brown, 1959
Buku Teks
Rubin, Seymour J.
John Hopkins Press , 1956
Buku Teks
Paxton, John
Macmillan, 1976
Buku Referensi
edited by Maarten J. Ellis and Paul M. Storm ; prepared under the auspices of the Association européenne d'études juridiques et fiscales by Paul M. Storm ... [and others]
Kluwer Law and Taxation Publishers, 1982
Buku Teks
Bergmans, Bernhard
Graham and Trotman, 1991
Buku Teks