editor-in-Chief, Cleveland Amory
Celebrity Register Ltd., 1959
Buku Referensi
Buku Teks
Mackinnon, Barbara, 1937-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Keylor, William R., 1944-, author
Oxford University Press, 1996
Buku Teks
Merriam-Webster, 2004
Buku Referensi