Freeman, Roger L.
John Wiley & Sons, 1991
Buku Teks
Kluwer Academic Publishers, 1998
Buku Teks
Freeman, Roger L.
John Wiley & Sons, 1980
Buku Teks
Freeman, Roger L.. author
Wiley, 1991
Buku Referensi
Freeman, Roger L., author
John Wiley & Sons, 1991
Buku Referensi