Luft, Joseph, author
National Press Books, 1970
Buku Teks
Tunas Wiraswasta Indonesia Lembaga Bina Wiraswasta, 1978
Buku Teks
Irsan Azhary Saleh, author
LP3ES, 1986
Buku Teks
edited by Jonathon Gillette and Marion McCollom
Addison-Wesley, 1990
Buku Teks
Staley, Eugene, author
McGraw-hill, 1965
Buku Teks