edited by D.J. Gijlstra and E.L.M. Volker
Kluwer Law & Taxation, 1983
Buku Teks
edited by M. Van Empel ...[et al.]
Kluwer Law & Taxation, 1990
Buku Teks
Toth, A. G., author
Clarendon Press, 1990
Buku Referensi
edited by Richard M. Buxbaum ... [et al.]
W. de Gruyter, 1991
Buku Teks
STBS , 1991
Buku Teks