Gaya APA
Woelfel, C, J. (1991).
Encyclopedia of banking & finance Volume 1, A-I (Tenth edition).
america:
Probus Publishing Company.
Gaya MLA
Woelfel, Charles, J..
"Encyclopedia of banking & finance Volume 1, A-I".
Tenth edition
america:
Probus Publishing Company,
1991.
Referensi.