Doane, David P., author
McGraw-Hill, 2016
Buku Teks
Wessel, Robert H., author
Henry Holt, 1959
Buku Teks
Ananda Nabilla, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
Anson, Sir William R
3124, 1961
Buku Teks
Anson, William R., Sir, author
Clarendon Press, 1947
Buku Teks