501 must-take journeys
Emma Beare, editor
Bounty Books, 2013
 Buku Referensi
Trifoni, Jasmina
The world's 100 best adventure trips
White Star Publishers, 2013
 Buku Referensi
Zhang Chunxia
Volunteer campaigs in China
Baiwanzhuang Street, 2009
 Buku Teks
The traveller's guide to planet Earth : experience 50 extraordinary destinations from the BBC's spectacular documentary
BBC Earth (Firm)
Lonely Planet, 2010
 Buku Referensi
World travel encyclopedian : insight guides
APA Publications , 2007
 Buku Referensi