References 1975 British Mount Everest Southwest Face expedition

sources

boardman, peter; richards, ronnie (1976). british everest expedition sw face 1975 (pdf). alpine journal. 81 (325): 3–14. retrieved 3 october 2014. 
bonington, chris (1976). everest hard way. london: hodder , stoughton. isbn 0340208333. 
bonington, chris (1986). everest years: climber s life. london: hodder & stoughton. isbn 0340366907. 
bonington, christian; scott, doug (1976). everest southwest face (pdf). american alpine journal. 20 (2): 345–358. retrieved 13 september 2014. 
gillman, peter, ed. (1993). everest – thirteen routes . everest: best writing , pictures seventy years of human endeavour. boston: little, brown. isbn 0316904899. 
ralling, chris (1994). filming on everest (pdf). alpine journal: 116–124. retrieved 5 october 2014. 
ralling, chris; kelly, ned (1975). everest hard way (video download trailer). bbc. retrieved 5 october 2014 – via steepedge. 
scott, doug (1976). everest south-west face climbed . himalayan journal. 34. retrieved 13 september 2014. 
thompson, simon (2010). unjustifiable risk? : story of british climbing. milnthorpe: cicerone. isbn 9781852846275. 
unsworth, walt (2000). everest: mountaineering history. seattle, wa, us: mountaineers books. isbn 978-0898866704. 
venables, stephen (2005). british on top of world (audio). bbc. retrieved 10 september 2014.