Horwath, Ernest B., author
John Wiley & Sons, 1977
Buku Teks
Horwath, Ernest B., author
Ronald Press, 1970
Buku Teks
Simmerson, Reginald Ernest, author
Edward Arnold, 1970
Buku Teks
Hilda Rossieta, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1984
UI - Skripsi (Membership)
Bowen, Elizabeth, 1899-1973, author
Penguin Books, 1928
Buku Teks