In response to Planning Fallacy
Comment author: rickdude 21 February 2013 02:58:49AM 7 points [-]

A quick point: "et" is a complete Latin word meaning "and". Just like "and", it doesn't need a period after it, as it is not an abbreviation. Thus,

Buehler et. al. (2002)
should be changed to Buehler et al. (2002)