Gaya APA
Langen, Eugen. (1973).
Transnational commercial law .
Leiden:
A.W. Sijthoff.
Gaya Chicago
Langen, Eugen.
Transnational commercial law.
Leiden:
A.W. Sijthoff,
1973.
Text.
Gaya MLA
Langen, Eugen.
Transnational commercial law.
Leiden:
A.W. Sijthoff,
1973.
Text.
Gaya Turabian
Langen, Eugen.
Transnational commercial law.
Leiden:
A.W. Sijthoff,
1973.
Print.