Guinness book of records 1988 editor and
London Guinnes Books 1987
 Buku Referensi
The Guinness book of records 1988 / editors Alan Russell, Norris D. McWhirter
Guinness Publishing, 1987
 Buku Referensi
The guinness book of records 1990
editor, Donald McFarlan
Guinness Publishing, 1990
 Buku Referensi
Pedoman hari sumpah pemuda/hari pemuda ke-60, 28 Oktober 1988 / [Kantor Menteri Pemuda dan Olahraga]
Kantor Menteri Negara dan Olah Raga, 1988
 Buku Teks
Guinness World Records 2014
editor-in-chief, Craig Glenday
Officially Amazing, 2013
 Buku Referensi
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