This encyclopedia is an authoritative source of information about linguistics and its applications. This online edition contains: more than 7.5 million words, audio files, commonly used abbreviations, 200 language maps, and a list of world languages (including information on the number of speakers, language family, etc.).

Available online.

"The Routledge Dictionary of Modern American Slang offers the ultimate record of modern, post WW2 American Slang. The 25,000 entries are accompanied by citations that authenticate the words as well as offer examples of usage from popular literature, newspapers, magazines, movies, television shows, musical lyrics, and Internet user groups."