Taylor, Michael, author
Guinness Superlatives Limited, 1984
Buku Referensi
by David A. Hodges ... [and others]
Guinness Pub, 1994
Buku Teks
Newspaper Enterprise Association, 1982
Buku Referensi
Newspaper Enterprise Association, 1987
Buku Referensi
Newspaper Enterprise Association, 1985
Buku Referensi