Sudargo Gautama, author
[s.n.], [s.a.]
Buku Teks
Universitas Indonesia,
Majalah, Jurnal, Buletin
Robert H. Perry, Don W. Green, James O. Moloney
Kementrian Pekerjaan Umum, 2006
Buku Referensi
Hooker, M. B., author
Oxford University Press, 1978
Buku Teks
Sudargo Gautama, author
FT Law & Tax Asia Pacific, 1997
Buku Teks