National Development Informasi Office, 1984
Buku Teks
Edited by Tom M. Palmer; Jonathan A. C. Sterne
Stata Press, 2016
Buku Teks
Hogshead, Sally, author
Harper Business, 2016
Buku Teks
Ninasapti Triaswati, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1987
UI - Skripsi (Membership)
Benjamin B. Wolman, editor ; George Stricker, co-editor
John Wiley & Sons, 1994
Buku Referensi