Kunio, Yoshihara, author
Oxford University Press , 1982
Buku Teks
Giestavia Prixasti, author
Ballinger , 1984
Buku Teks
edited by S. Prakash Sethi and Carl L. Swanson
John Wiley & Sons, 1981
Buku Teks
Foss, Murray F., author
American Enterprise Institute, 1984
Buku Teks
Giestavia Prixasti, author
The Free Press , 1958
Buku Teks