Scoor-oot: A Dictionary of Scots Words and Phrases in Current Use by James A.C. Stevenson (Late of The Dictionary of the Older Scottish Tongue)
This dictionary covers a multitude of Scots words and expressions, some of which have entered into English worldwide, some of which are peculiarly Scottish and communicate much about Scotlands unique culture and society. Often light in tone, it offers valuable insight into the linguistic development of Scots.