Sarah Walker, New Zealand BMX rider, silver, 2012 London Olympics. 薩拉·沃德, 紐西蘭BMX騎手, 銀牌

London Olympics | BMX | Sarah Walker | Stuff.co.nz http://www.stuff.co.nz/sport/olympics/cycling/7462342/Beijing-video-inspires-Silver-Sarah-Walker

New Zealand Herald/Brett Phibbs
Kiwi Sarah Walker wins silver in BMX | Otago Daily Times Online News : Otago, South Island, New Zealand & International News http://www.odt.co.nz/sport/london-olympics-2012/221186/kiwi-sarah-walker-wins-silver-bmx

IAIN MCGREGOR/Fairfax NZ
London Olympics | BMX | Rewards await New Zealand's... | Stuff.co.nz http://www.stuff.co.nz/sport/olympics/cycling/7464500/Rewards-await-New-Zealands-Sarah-Walker

sarah walker | Tumblr http://www.tumblr.com/tagged/sarah-walker?before=1344749228

null | NewsWhip | http://www.newswhip.com/MoreInfo/Walker-ready-for-BMX-battle/6231796

Cycling at the 2012 Summer Olympics - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Cycling_at_the_2012_Summer_Olympics
2012年夏季奧林匹克運動會自由車比賽 - 维基百科，自由的百科全书 http://zh.wikipedia.org/wiki/2012%E5%B9%B4%E5%A4%8F%E5%AD%A3%E5%A5%A7%E6%9E%97%E5%8C%B9%E5%85%8B%E9%81%8B%E5%8B%95%E6%9C%83%E8%87%AA%E7%94%B1%E8%BB%8A%E6%AF%94%E8%B3%BD