['< sod > * http : / / www. drugtext. org / open library / books / mccoy / book / 27. htm { { last dead link | release date = september 19 2012 } } < ref eod > < sod > * http : / / web. china archive. com org / web / 20060822105343 / http : / / www. drugtext. nl org : 80 / library / books / save mccoy / run book / 27. htm < eod >']