Piesse, E.L., author
The Law Book Company Limited, 1976
Buku Teks
Carla Vania, author
Fakultas Hukum Universitas Indonesia, 2022
UI - Skripsi (Membership)
Prestressed Concrete Institute
Englewood Cliffs, 1975
Buku Referensi
Haggard, Thomas R., author
West Publishing, 1996
Buku Teks
Dickerson, Reed, author
American Bar Foundation, 1965
Buku Teks