Hahn, Harley
McGraw-Hill, 2000
Buku Referensi
Hahn, Harley, author
Osborne McGraw Hill, 1997
Multimedia
Ety Parwati, author
Universitas Indonesia, 1988
UI - Skripsi (Membership)
Hahn, Emily
Doubleday, Doran & Company, 1941
Buku Teks
Brady, Joan
Pocket Books, 1996
Koleksi Publik