Barksdale, Hiram C.
Problems in marketing research : in-basket simulatiuon
Holt, Rinehart and Winston, 1963
 Buku Teks
Freddy Kusnady
Problems vis a vis the accounting systems of an insurance company, especially of the state general insurance company "Bendasraya" : an analytical approach
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1973
 UI - Skripsi Membership
Insurance for executives: training for non insurers
Jurusan Manajemen FEUI, 2001
 Buku Teks
Durand, Vincent Mark
Severe behavior problems : a functional communcation training approach
Guilford Press , 1990
 Buku Teks
English, Arthur Robert
Financial problems of the family company / by A.R. English
Sweet & Maxwell, 1958
 Buku Teks