Christina,If the following extract is as exactly as you say it is then I'm guessing it is some sort of text file?Site Reference Lat Long
Achany Glen Dugmore et al. (1996) 57.983 -4.396
Beinn Eighe Dugmore et al. (1995) 57.63 -5.3
The problem is all the spaces and the computer is not intelligent enough to realise that the space in "et al." is part of "et al." and not a field delimiter.You need to ensure a consistent structure to your table with recognised delimiters such as a comma. I would recommend restructuring your text file to:"Site","Reference","Lat","Long"
"Achany Glen","Dugmore et al. (1996)",57.983,-4.396
"Beinn Eighe","Dugmore et al. (1995)",57.63,-5.3
Each field is separated by a comma and text is enclosed in "".Duncan