Urwick, Lyndall F., author
Harper & Brothers, 1960
Buku Teks
Converse, Paul Dulaney, 1889-, author
Prentice-Hall, 1958
Buku Teks
Piesse, E.L., author
The Law Book Company Limited, 1976
Buku Teks
Swarup, D., author
Rakesh K. Rastogi for Rastogi, 1981
Buku Teks
Buku Teks